JG, where will you be coming from?
The Plaza is a great place to start! It has Armani Exchange, AT, J. Crew, BR, Urban Outfiters, Express, Anthrpologie and more.
Oak Park Mall on the Kansas side (Johnson County, not Kansas City, Kansas) on 95th Street has Nordstroms, AT, ATL, BR, ArdenB, Macys (2 stores), Express, Forever 21 (XXI Forever), Gap, WHBM, Sephora, etc
Town Center Plaza, also on the Kansas side (also Johnson County) on 119th St. has AT, ATL, Macy's, Express, BR, Gap, J Crew, J Jill, WHBM, etc
Another place is The Legends at Village West on the Kansas side out near the NASCar track off interstate 435. It's not hard to get to if you have a car. 435 makes a circle around the city. It has AT Factory Outlet, Gap Outlet, Converse Store, BR Factory Outlet, a big Marshalls, Forever 21, BCBG, Brooks Brothers Factory Store, and more
There is also a nice mall in the north area that I don't know that much about but can find out if that's where you'll be. Google Zona Rosa for that one. Let me know if you have other quizzies.