Where can you buy an Alabama crimsonette outfit?

you cant. Im sorry but the Alabama Crimsonette uniforms are not for sale

This is technically true. The UofA can and should protect its name, logo's etc. However, at Kenerly Kreations you can get that style of two piece uniform in any school colors you like. You just can't put any school names or logos without express, written permission from the school.

The uniforms are typically $400-500.

Check out http://www.kenerlykreationsinc.com/display.cfm/pid/10/item/1258/thsId/9/The Bella.html

and

http://www.kenerlykreationsinc.com/display.cfm/pid/10/item/1061/thsId/9/The Kelly.html