My brother lost a bet to me and i get to dress him as girl for 7 days any ideas.?

Try this, from top to bottom: long-hair wig
lots of makeup, with blue eye shadow, false lashes and bright lipstick
clip-on earrings, unless both of his ears are pierced and then use really big hoops
scarf around his neck
cute t-shirt with padded D-cup bra, or tight sweater with padded D-cup bra
painted fake fingernails
skirt
pantyhose
low heels (he'll kill himself in high heels)