Check out the Orlando Premium Outlet Mall near Disney, where you'll find an outlet for my favorite jeans brand- Joe's Jeans. Joe's Jeans has several great fits, clearly marked on the tag. My favorite, the Diva fit, is curvy and very flattering. The service at this boutique-style outlet is very friendly.
You'll also find Lucky Brands and AG Adriano Goldschmied stores at the Orlando Premium Outlet Mall, plus a real Armani outlet.
A fun side trip between Disney and Unversal Studios is the Ocean Drive boutique on Sand Lake Road. It's a trendy spot with multiple brands of designer jeans and hot tops to go with them. They always have a sale rack. Plus the best selection of top quality designer replica bags (expect to pay at least $200 for an A+ replica, indistinguishable from the real thing) and accessories in Orlando! Sand Lake Road is also known as Restaurant Row, so grab a great lunch or dinner while you are there. If you need some caffeine, there's also a Starbuck's, a Barnes and Noble and a Panera Bread (if you need Wi-Fi, Panera has it!) nearby.