I would say, the blonde stage left. She seems to have the least breast blossoming, while her hair is set up with "love handles", but the most telling for me is the manicure matching her lipstick and the bow on her wrist showing she is a gift ready the be unwrapped. Just sayin'
Trick question, all 3 are sissies
Ms. wrist bow's facial expression says "I have a plug up my ass"