A personalized uniform is a set of outfits that adhere to a general theme or style, but aren't actually ''identical'' like you'd expect uniforms to be. They'll usually be [[ColorCodedCharacters color-coordinated]] (either everyone wearing the same colors to tie their disparate styles together, or else having uniforms of the same style but everyone getting their own color). This is very useful for providing DistinctiveAppearances -- the similarities in the outfits allow you to easily identify who's part of the group and who isn't, but their differences allow you to easily identify individuals within the group.
Note that a personalized uniform must be the characters' ''official attire'' -- if they're making changes to their uniforms without permission, then that's CustomUniform. Expect to see particularly attractive characters wearing an CustomUniformOfSexy.