I saw this post on reddit.
I feel pretty bad for the bridesmaid. Maybe she has a goal, or maybe the bride could act like an adult and treat her bridesmaid like an adult and say that she doesn't think the medium size will fit, or maybe the bride could recognize the bridesmaid is an adult and just give her the damn size she wants OR call me crazy (and some of the redditors did lash out at one of the posters who suggested this) nix the whole stupid matching outfits idea.
Normally the advice on this subreddit is alright but this is just sad. Like I actually felt bad for the bridesmaid, normally I don't care. But lying to someone who is close to you just because of looks. Grrr!