Tough assignment

I talked to a young girl who likes to control and humiliate me regularly. Ill skip the whole story but the bottom line is i have no choice but to go to the mall alone and buy her a dress. I don't know her size or what she wants and she swears that if its wrong I'm being sent back to the store wearing it. I don't think I've ever seen a guy dress shopping before. Any help from the girls on here or am i on my own?

Best thing for you to do is get it in your size! It's a win win!

Well thats a bit of an embarrassment too because we are very close in size...its going to appear that im shopping for myself. Ive gone twice now and was too embarrassed to buy anything. Still trying.