I have big upper arms but was able to wriggle into the sleeves comfortably and the lining in the bust was supportive. Positive comments when I wore it on Insta.

I am 5’1 and weight 125lbs. Typically I wear a small but I seen the was one review to size up because it runs small so I purchased a medium. I can see why it runs a little tight. The medium definitely snugged but the dress has some good stretch so I definitely could have size down as well. The straps ran a little on the loose side because I ordered a medium. Definitely cute and still fits like a glove.