Most Helpful Girl
Well first off apart from what others have said (I won't mention names) I think you dress rad!
As for your question, one day when you guys are out to the store try to get him to try something on that you like and tell him if he does (depending on if he is fussy) you would try on whatever he would like, make it fun :)
Then once he has it on compliment the heck out of him! Never nag a man, they HATE that. Don't pressure him to buy it right then and there, if he wants to great :D but if he doesn't no biggy, which leads to action plan D) you buy it for him as a gift (I think that would impress him). Then every time he wears what you like reward him with kisses or a neck rub. It's just like training a puppy, you train it through compliments and love, not screams and spanks :/
Hope it helped!