Anyone who tells you that is full of shit. Weight doesn't matter and short hair looks great on girls.
OT:
Other than the obvious gender role problem, there aren't really many things I don't like about being a guy. However, there are plenty of things I hate about being born a girl
-I can't have long hair and pass at the same time due to my baby face and lack of facial hair.
-Boobs are the worst because if I don't bind them, I usually don't pass, but if I do bind them it's uncomfortable as fuck and I have to watch how many hours I'm out in public so I don't do any damage.
-Fucking periods, man. It's practically a monthly reminder that I was born a girl with the additional cramps and blood.
-Curves, because I can't wear anything that's even remotely tight without it being a dead giveaway that I wasn't born male.
-My somewhat high pitched voice. Because if my body didn't give it away, this will.
-Bottom dysphoria. That's all I'm saying on that one.
-People that I'm not out to asking me if i'm a lesbian because I dress like a guy.
-People that I'm not out to questioning why I don't wear makeup.
-The fact that I can hardly look at anything below my shoulders in the mirror without feeling like crap.
-Speaking of shoulders, my shoulders are kinda thin, unlike most cis guys.
tl;dr: being trans sucks