We love the Premium Outlets. There are two locations, one on the Universal end of I-Drive and the other near the SeaWorld end of I-Drive. Many of the stores are the same, but there are some differences between the two (Under Armor, for example, is only featured at the location near Universal). We have found some amazing prices on clothing and footwear at both of these outlet locations. In one case, my husband bought a pair of shoes at the Nike outlet for $25 that we saw later that week at House of Hoops in the Florida Mall for $100. Same exact pair. If time is of the essence, I would check the store listing for both locations and just pick the one that offers the most stores your girlfriend would be interested in.
We also like the Florida Mall, which is where you will find the M & M Store. That mall features lots of trendy stores like Aeropostale, American Eagle, Hollister, Abercrombie & Fitch, etc.
Strangely enough, our favourite shopping destination in the Orlando area is the Nike Clearance Outlet in Kissimmee. Its in a little strip mall on the Irlo Bronson Memorial Highway. We have found some amazing discounts here and its become a must-do on each trip for our teenaged son. And I love that everything is organized by size.....so no plowing through the racks to find out if they have your size in the item you want.