Name: Black Marie Sheath
Brand: Cinq à Sept
SKU: CAS19
Price: 53 USD
Availability: OutOfStock
Rating: 4.5 (173 reviews)

Beautiful detail, many compliments! Very snug, no bra needed. Very sophisticated, high quality fabric. No give whatsoever so you must size up! Lenghth of dress hit me right at mid calf. Goes with most accessories! 

The dress does fit slim through the hips and butt. I am 5'9 and weigh 150lbs and usually wear a size 8. I was thankful I ordered the size 10 as well and was happy I did. There was little difference between the 8 and 10 so the size 10 is what I ended up wearing. The zipper is very tough to pull up when you get at the boning. It was like that on the size 8 dress so I know it wasn't just my dress. 

I’m glad I read the reviews before and sized up.  I normally wear a 2 or a 4 but ordered the 4R and 6R.  I wore the 6R and it fit like a glove. Otherwise, great dress and would rent again. Although I am petit, I ordered the regular so it was longer for the formal affair.  

Reviews are right - I'm normally a J Crew 0 or 00 but I wore a size 4R to officiate a wedding

This was my first rental and I have to say it set the bar quite high. I wore it to an industry event and received compliments all night! I love that it is a classic LBD with a little "extra" on the bottom, which is what I think makes it. Size-wise I was skeptical when a few reviews mentioned it ran small, but this one actually does. I am a JCrew girl and generally wear XXXS in tops so I figured a size zero would be perfect. Let's just say, I am glad I got a 2 as a backup size, even that was a bit snug. I am pretty slender and straight at 108 lbs/5'4"/32B. Very very pleased with my first rental!

Everyone is right, size up! I wore a 6R and usually I would pick a 2 or 4. The fabric is a nice weight. It was a bit longer on me than the model but I didn't mind. I still got so many compliments! Great dress 

After reading the reviews, I ordered one size up and it fit great. Loved this dress so much!

Everyone freaked me out that it ran small. I sized up from my usual 4 to a 6 and also ordered an 8. The 8 was huge and the 6 looked like it was made for me. Classic little black dress with a pop!

This dress was great for a wedding and got tons of compliments. I’m typically a size 0-2, 5’4”, 126lbs, 32A.  The 4 fit well, was a little longer than I would’ve liked (less midi, closer to a maxi) and there’s a band below the bust that was a little tight! Overall great dress. 

I am one of those people that typically does not listen when someone tells me to size up, but this time I did (and THANK GOD!). The 4 fit amazing and I am certain the 2 would not have fit. This is a beautiful dress and I received loads of compliments. Just beware that the zipper sucks and can give you some trouble at the waist where there is a ribbon. You may need an extra set of hands getting into this one.

Fit is so flattering, and LOVE the lace detail at the hem.  Too simple for what i was going for for a BTO winter wedding, but this is a perfect LBD!!

I initially ordered this dress in a 4 as that is my usual size and I thought I was the exception to the rule of "sizing up." Well, I should have listened to every single previous review because you HAVE to size up. I ended up getting a 6 and it definitely was very tight fitting, but workable. I was able to sit down, dance, move around and eat 2 pieces of cake all while still feeling comfortable. I am very narrow (read as no curves) so I could imagine having to size up 2 to 3 sizes to have it fit you if you've got some curves. It is an extremely classy dress and I got a lot of compliments! Would recommend. 

This dress was absolutely gorgeous! But be warned it runs extremely small . . I usually wear a 4-6 in dresses and I ordered an 8 and a 10. The 8 unfortunately had a broken zipper so I ended up wearing the 10 which was a little big in the hips but fit my rib cage. Overall it's a gorgeous dress and I highly recommend! 

Although it was definitely tight around the waist, the result was curves.  I'd recommend it, but be prepared to be slightly uncomfortable all night.  Felt stunning! 

Very very fitted on my figure, which I liked because the fabric was thick and the dress was lined, so I found it to be flattering on my curves. Not necessarily the easiest dress to move around in... I'd probably recommend spanks if you're concerned about your midsection, but that's just me. I rented this for a formal affair at a swanky hotel, but also wore it to work with a blazer and nude heels the following week because I loved it so much. Fun little twist on a basic black dress! 

Glad i ordered up... fit like a glove but didnt need crazy undergarments.  Would rent again!

I ordered the 6R and 8R. The only part that was too tight on the 6 was the boobs (32DDD) so i wore the 8. The waist and hips were a little loose but overall great dress. 

I wore this to a friend's wedding on NYE and I absolutely loved it. This was actually my free second dress for my first RTR and I ended up liking it more than the main dress I had picked out. Based on the other reviews, I sized up 2 sizes and the fit was perfect. The dress is slim fitting, and hugs in all the right places. Seriously considering renting this one again :)

I️ will for sure rent this again! I️ received so many compliments! The dress is quality fabric and comfortable. Be sure to size up. I️ went up 2 additional sizes up from my normal 2/4 and it was still snug. 

Ended up wearing a different dress but LOVED this! Reviews suggested size up for boobs and the 10 was snug on my 32H chest. (Wearing a 6 in most other styles) 

The material is thick and structured. Excellent quality and I️ will definitely rent again! 

I love this dress so much but there is nooooo stretch in the middle part. It was very hard to even zip. I also have a large chest (34dd) which didn't help. I sized up to the 8 and probably could have even done the 10 if it was available. I loved this dress though and was glad the 8 still worked. I wore it for a welcome party for a wedding weekend that was "cocktail attire" and the dress was perfect. Highly recommend but save yourself the time and order one size up and two sizes up as your backup...

My biggest issue with dress shopping is usually finding something that is small enough to fit me. Luckily this dress was perfect! I usually will wear a 00, but this 0 fit great - so it probably runs a bit small. The fabric is a little thicker, great quality. The shape of the dress is very flattering and it is easy to move in. I would highly recommend!

Sized up two sizes and it fit perfectly. If I had a larger bust I imagine it may be too tight in the top. The regular was longer than the model in the picture. Would rent again.

I cannot emphasize enough how small this dress is, but I LOVED it! Go up at least two sizes and you'll be fine.

I was so happy with this rental! It was perfect for the occasion--classy yet subtly sexy and surprisingly warm! I paired it with matching red lips and nails to give it a splash of color and to coordinate with the bf. The dress runs small but fit like a glove! I'm usually a size 6 or 8 but after reading other reviews I decided to rent the 8 and the 10 and I'm glad I did! The size 10 was a perfect fit and the thick fabric really "held everything in place" if you know what I mean. ;) Wearing a bra would have been easily possible but I didn't think it was necessary. Also, the length was exactly what I was hoping for! IMO the dress on the model looks a little short but on most of the women in the RTR reviews it hits just above the ankle which is what I was looking for! Overall this would be a great dress to own and I would definitely consider renting it again!

I absolutely loved this dress! Got so many compliments. Extremely hard to zip, I may have panicked trying to get into it while I was already running late for the wedding and needed someone to drive over and zip me. ;) worth it!!!

Would def do a size up if I were to rent again. Loved the material and the lace detail. Also loved the band detail at the waist, but it did made it a little tight in that area. Would rent again!

I gave this 5 stars because it truly is an amazing dress and great quality. However, be warned ladies, the other reviews are correct: this dress runs very small. I am 6'0 150 lbs and wear anywhere from an 8 or 10 (usually more of an 8). Based on the other reviews I ordered a 10 and 12 as my back up. The 10 wouldn't go over my hips. The 12 was snug but fit fairly well considering. Other than the size I really have no complaints. It was an amazing dress and I felt really pretty the whole evening. Definitely recommend! 

I got so many compliments. Dress was amazing. Runs small so I had to wear a size up but it was still snug. Since its a longer dress it was a little harder to walk. I would definitely rent a dress from this website again. I am usually a size 2 but I had to wear a size 4.

This is by FAR my favorite dress I've rented. I rented it for a wedding, and it's the classic LBD. But the longer length added by the lace at the bottom was exceptional. It didn't have me worrying about moving all night or sitting down. However, the reviews are true; this dress runs smalls. I'm consistently a size 0 and I had to have help getting zipped into the size 2. But! Once I was zipped in, I was perfectly comfortable and could breathe comfortably. Just be careful if it's super snug on you not to pop the back seam while dancing.... oops. But, the insurance covered the popped seam to my relief. Still worth it and my favorite, and I will DEFINITELY order this again! You will get compliments all night :) Thanks RTR!

I wore this dress to a garden wedding, and boy, I am SO HAPPY i did. This dress was classy, beautiful, and sexy. I was worried that it would be too plain, but that was not a concern once i put it on. This dress hugs very very tight! I would get a size bigger than your regular fit. I am 5 foot 3, 130 pounds, typically a size 2 (ended up wearing a tight-fitting 2), and wore 5 inch heels with this dress. I got many compliments and i will be renting this dress again! This was my first RTR and it was a great experience!!


This is the perfect LBD! Though form fitting, the longer length and lace at the bottom makes it unique and gives it class. As the other reviewers noted, this dress runs very small and has minimal stretch around the waistline- I normally wear a 4/6, and the 6 just fit. While I would've felt more comfortable in an 8, this dress is very flattering. I highly recommend this for a cocktail/formal affair-- just remember, size up!

I absolutely loved this dress. Overall fit is absolutely one size small so order up. I wore this to a cocktail event for work and it was the perfect amount of conservative and sexy. I highly recommend this dress 

I received this dress and panicked.  I am normally a size 0, 2 at the most, so I rented a size 2 and a size 4.  When the dresses arrived they were both the same size, there was no difference between the size 2 and the size 4.  I couldn't get it zipped.  Finally, I zipped it up the front and twisted into it and it worked.  The dress was gorgeous but ran extremely small. 

Got so many compliments. Does run small. I am short but it was not too long on me like I feared it may be. 

The photo me in this dress isn't the best--I'm wearing it with a shrug and the angle isn't the most flattering. Trust me, the dress is AMAZING. My boyfriend's jaw dropped when he saw me wear it.
I'm a true size 6 and occasionally size down to a 4 or size up to an 8. Based on the reviews, I sized up the 8. It was slightly large on the top for me (totally normal for me as I wear a 32B bra and could probably get away with a 32A...) and it fit like a glove everywhere else. The dress does have a bit of stretch and I felt comfortable sitting and dancing in it.
I wore this to a NYE party with a 1920's bootlegger theme. The dress isn't a flapper dress, but I thought the lace at the bottom has a little of that vibe, so it was perfect since I didn't want to wear a costume.
I would rent this again without hesitation. 
LOVED IT!!!

Saw a lot of reviews saying that it ran small but did not find that to be the case. Ordered sizes 2 and 4 and wore a 2, although I wish I had ordered the 0 because the 2 was a little bit large around my hips. Wore it to my office holiday party and it was perfectly flattering without being too revealing for a work event.

This has been my favorite RTR dress, hands down. It was classy and sexy at the same time and I got a ton of compliments! The only downside is that the top part is pretty tight with very little give, so I couldn't wear a bra. But I would still rent this dress again over and over! 

Snug but flattering. Thin band below bust can make it tough to breathe deeply, but who needs oxygen when you look good ;) Consider sizing up or ordering larger back-up size. May run longer on shorter girls like myself than as pictured on model, but I didn't mind. Not the fabric I anticipated but again wasn't an issue. Highly recommend!


I read the reviews about it running small, but seeing as how I'm actually an XXSP, I figured the 0R would not be an issue. I could not zip it by myself. The material has no give whatsoever and the dress fits tight. The lace at the bottom also cuts awkwardly on a petite frame. The lace comes to my ankles and is unflattering, however the main bodice of the dress is very flattering once zipped. Would recommend sizing up, and only for girls 5'4" and taller. I am 5'0" and it just was not the right dress for me. Did not wear it to the wedding and went with another dress instead that felt more comfortable and was more flattering to my petite frame.

The bottom of this dress is adorable, but the waist band has no stretch and runs so small. I wore 2 sizes up and still felt like I couldn't breathe/bend over! Looks cute, but order 2 sizes up and don't expect it to super comfy!

This was a nice dress - classy with a bit of fun flare, but the reviews are spot on as to sizing. I usually wear a 2 or 4 in dresses and the 4 was so tight that zipping into it was comical. I made it work, but would definitely recommend sizing up at least one size as there is absolutely no give and the band at the bust makes zipping even more difficult if it's a tight squeeze. 

The dress itself is a simple LBD sheath, but well fitted (no baggy extra in the low back). The lace on the bottom is what makes it! Fun to wear and looked great in pictures.

The zipper on this dress was very hard to get up over the waist section even though the fabric was touching. Almost couldn't wear it. 

The dress runs a little small, so it was a tight fit around my rib cage.  There is no give in the fabric.  There wasnt a size 12 that was available, so I wasnt able to see if that size fit better.  Overall I loved the way it looked on me and I got a lot of compliments! 

Runs small and very difficult to zip up! But overall cute fit. 

I was able to wear the size I anticipated, with a bit of wiggling. Thought the tighter fit was worth it given the form fitting nature, of which felt great! I could still wear a racerback bra with it. Slit in the back of the lace is sexy and made it a bit easier to move. Only qualm was a small tear in the lace when it arrived, and I was scared more could rip if I wasn't careful enough. 

I ordered the 12 and I'm glad I took the advice of other ladies, it definitely was a bit tight and I had a little trouble sitting down.  For a bigger bust, definitely order a size or two larger and I would never recommend buying your normal size. Always size up for this one.  Very flattering otherwise and I received so many compliments.  

Great mid calf length, dress ran small so size up

I absolutely LOVED the look of this dress. I felt classy and elegant, but still chic and trendy. It is the perfect little black dress with a twist. In terms of sizing, I am normally a size 4-6, but after reading the reviews and taking my wide ribcage into consideration, I ordered a size 8. Even so, the waist band was EXTREMELY tight. The dress has stretch, but the waist band does not!  I had to wear spanx and still had trouble zipping it and breathing deeply. I liked the dress so much that I decided to tough it out, but if I were to rent it again, I would definitely get a 10. As far as the length goes, I am 5'1" so I normally don't go for a midi dress, but this one worked on my short frame because of the lace on the bottom. The lace was shear enough that you could see my legs through it so they didn't look two inches long like they normally do in a midi length dress. Overall a great dress. I got tons of compliments, but next time would go 2-3 sizes up. 

Read the reviews how this dress ran small.  I'm 5'10" and 147lb. I'm usually an 8 so when I went to order I requested the 8 & 10. The size 10 was unavailable so I went for the 8. I knew it was going to be tight. I ended up going braless with spanx, so my thighs wouldn't stick together when I walked. I got through the evening and danced but was constantly pulling the dress down when I got up from sitting. Ha! That's what I get for going for the smaller size. I rented the dangly earrings to go with. They were beautiful. I would definitely rent this dress  again in the bigger size.

The dress was a bit snug on me even in a size 12. Otherwise it was a fun change from a basic little black dress. 

I'm thankful for the reviews that mentioned that this dress runs small. I am usually a 6, but ordered an 8 and backup size in a 10 after reading the reviews. I ended up wearing the size 10, because the waistband is very small, which also makes the zipper a little difficult. Once I was zipped in, I felt very comfortable and confident in the dress. I wore the dress with long earrings, a statement necklace and simple black strappy heels to a black tie optional wedding.

Black Marie Sheath

Cinq à Sept

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