Only three of my jobs have ever required a uniform. Khakis at Walmart, khakis and a polo at Blockbuster, and jeans and a white button-down at Picture People. At Hot Topic I could wear whatever the hell I wanted which was pretty awesome. And now I work in credentialing, in an office, and can still wear almost whatever I want, though nothing vulgar and no facial piercings.
I dunno that I could do a full uniform. Especially fancy office stuff, though it would be fun to go shopping for it, until I'm reminded that it's almost impossible to find anything flattering in my size ever.