Instead of going slutty, go as a mom--the "ultimate sex symbol". Wear sweat pants and top, weighted socks slung over the shoulders and onto the chest (like you've got big breasts, but no bra = easier to breast feed), stitch a baby doll or two to each hip, and put on a frazzled hair/makeup look.
You could probably glue a couple grocery store receipts to the sweatshirt, and maybe fake barf over one shoulder..."had ta' burbp da baby, don'cha kno!"
Maybe have a fake cig hanging out of yer mouf...and your story would be "I'm lookin' for ma suga' daddy!"
(Welcome to the world of women! LOL)