there are alot!
ive got one of each and my bump shapes were same but with my boy i put weight on all over including my face, yet with my duaghter i looked same size from the back and my face thinned out.
Spotty with daughter no spots with son
Hair thin with daughter and i didnt bloom, with my son i had lovely skin and thick shiney hair
nipple colour, brown with boy, pink with girl
craved salty food with boy, sweet with girl
this is fun to read
http://www.babycentre.co.uk/pregnancy/naming/k nowingsexfolklore/ and having gone through them there are a lot that were right for my pregnancies.
Dont read too much into them though, its probably all coincidental.