Name: Black Diamond Flounce Dress
Brand: Christian Siriano
SKU: CS55
Price: 130 USD
Availability: OutOfStock
Rating: 4.5 (59 reviews)

Perfect fit! The split is high but every thing else I perfect. 

Not as structured as I hoped but incredibly comfortable 

The dress I originally rented for this wedding was out of stock, so this was a backup option. It was very lovely for a family wedding. I found the material to be exceptionally comfortable. I opted not to wear a bra, and found that the dress was thick enough to get away with this. The cut-outs and see through sections make this dress visually interesting, but are not too revealing or sexy for a more conservative family affair. I am quite short, so this hit me mid calf. Plenty of compliments. 

I usually wear an 8 but find most dresses on rent the runway, I need to go up a size.  The 10 fit and was a little loose...but that made it so comfortable for dancing and eating at our event.  If you have nice shoulders this dress will show them off.  Loved it. 

GORGEOUS dress, will rent again. The under-layer is a bit short (I'm 5'10) and I had to pull it down often, but this dress is so beautiful, fits well and is unique. 

I am not one to show my arms however this dress knock it out the park. I loved the special details of sheer elegance to this dress, made it both sexy and classy. 

This dress is totally phenomenal!!! Very comfortable and got so many compliments. Didn't need to wear a bar, but could wear sticky bra if needed. I'm 5'7 had on maybe 5" heals and the fit was perfect (145lbs). Very soft and not as hard as the may look with the structure. 

Fits true to size and was very comfortable all night!

Very comfortable. Wish it came in other colors too. 

I got so many compliments on this dress it is so unique and extremely flattering.  It's generous in fit all around (including the bust and I'm a 36D), and accentuates your best features.  The only annoying aspect of the dress is the liner riding up when you're sitting etc. I wore spanx under it so I wasn't that concerned but I had to re-adjust a few times.  It was such an easy dress to get on/into and really was a breeze to wear. 10/10 would recommend for any formal event!

This dress fit like a glove, it was a little snug to zip but the material has a little stretch to it so dancing was no issue. I'm 5'2 and 120lbs and it for perfectly. I had planned to wear a different dress and I'm still disappointed that I wasn't able to wear it due to someone not returning it on time. I ordered the other dress 2 months in advance! Luckily this dress came through. 

I received SO many compliments on this dress.  I am so in love with it and i wish i could purchase it!  I may be renting this one again.  

Fit perfectly and was comfortable to move around in. Loved the design and details too. I wouldve rated a 5 star but the slip part would shimmy up way to easily when i would sit and id have to make sure it was pulled down everytime I stood. Probably more of a problem for those with a curvier backside like myself. Thicker material hid any flaws. Im also 5'5 and the dress hit me about mid calf so the length was ideal for the occasion.

Just check the slip underneath every so often to be sure it doesn't ride up and stay up. 
Would definitely wear this again!

I wore this dress to a cocktail attire gala at a museum. The event was themed Dragons, Mermaids & Unicorns and people are encouraged to dress in character-ish so I went with this dress thinking the pattern kind of looked like scales. It was a huge hit and I got tons of compliments. Both the 6 and 8 fit but it was easier to sit in the 8 so I️ went with comfort. The top fit great even though I am quite small on the top. The  bottom hugged my hips just enough to feel night and fitted. The middle is sheer so it added a little sex appeal. I would recommend this dress for a black tie optional event it was so fun and easy to wear! 


There was nothing that felt awkward about any part of how this dress felt or fit. It felt unique for a black dress and made me feel carefree and special all night. Gotta hand it to Christian Siriano for knowing how to dress bodies so well! Will be looking for more of his dresses in the future.

Obsessed with this dress!! My original dress didn't fit and the RTR stylist recommended this one, which I normally wouldn't have picked off the rack. I'm so glad he did! So many components and Fit like a glove!

I loved this dress. I would never have chosen it off the hanger, but it looks fabulous on. A little bit of sexy with the sheer panels, combined with elegance. I wore with dramatic earrings, since no necklace on the high neck, and a bright clutch. Was  perfect for a black tie wedding.  I would rent again for my next formal event!

Very sexy dress. Fits like a glove.Accentuates all your curves.The sheer waist and ruffles at the bottom make the dress pop.Very fun to dance in.Thank you Mel for helping me out. This was a backup dress.It worked out perfectly. 

This was such a fun dress. You will definitely stand out! I loved all the ruffles and subtle cutouts. This hit me a little lower than tea length. Would be great for an formal/semiformal event.

This dress was beautiful and SO comfortable. It was classy but also fun because of the pattern and flare at the bottom. 

I am officially hooked on RTR after my first rental. This dress was exactly as described in the reviews. Comfortable, classic, with a bit of an edge. The cutouts are positioned perfectly, and the length worked on my 5' frame. Tons of compliments, and I bragged every time that it was RTR. Christian Siriano is the master for dressing a woman. 

Fit true to size. I didn't think I would like the length, but it was perfect for a winter wedding in  CT. Fun to dance in! Received many compliments and would definitely recommend for a black tie affair.

This dress is classy and very sexy!!! I'm usually a size 4 and wear 34B but the size 2 fit better from the top.  The only thing I didn't like about this dress is that the slip that is attached to the dress would roll up when I sat so when I got up I was showing my upper legs and had to quickly pull down the slip. But overall it's a beautiful dress. I will rent it again!!! 

Fit was true to size. I did not need to wear a bra. I felt very secure up top and not uncomfortable. I'm 5'2" and the dress went down a little past mid-calf. It was perfect. I wore it to a black tie optional wedding. It was cold that night so I paired it with a vintage fur. I would definitely rent this dress again. 

Dress was true to size. Didn't have to wear a bra. It was super comfortable. The dress actually went down to my ankles which I expected, since I'm 4'11,' so it was perfect for a black tie wedding.

This dress is spectacular and was a perfect formal wedding outfit. Even as a midi- it felt saucy, showed some skin but was appropriate and fancy enough! I was so happy with how it fit- true to size- and cannot say enough good things. The 6 (which I usually wear) fit perfectly. You can totally where this without a bra and feel supported. Only downfall was the slip kept riding up when I was dancing so I just had to pull it down every so often. 

Would wear this again 100%

Black Diamond Flounce Dress

Christian Siriano

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