There wasnt much difference between the 2R and 4R, primarily more room in the hips. I'm 5'5" and with heels the length was great. Wore regular bra and also worked out well. Definitely recommend - cut outs were tasteful, but also recommend Spanx underneath! You can still wear even with cut out in back.

Black Cut Twirl Gown

Slate & Willow

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Size Worn: 4R

Usual Size: 2

The comment that the arms are tight is absolutely right. The rest is adjustable and could even say slightly big. I took a photo of the back so you could see the slit opens to the waistline. Since the entire back ties you can adjust that significantly. I ended up wearing the 2 when I normally wear a 4 because there is so much flexibility. I actually didn't wear a bra (#wheninmiami) because the material was heavy enough to do so, but also a 34A. All in all was lots of fun!

Gold Zena Romper

Shoshanna

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Size Worn: 2

Usual Size: 4

Height: 5' 5"

Weight: 130lbs

Bust: 34A