I think it was Madonna - from some magazine article I've read a long time ago - who said that the trick is to keep evolving.
Proudrace, a trio of brilliant 20somethings who made pop the slogan shirts in this country, does fine at it -> evolving. (My hunch, actually, is that a good understanding of their niche had played well for them). Here’s to share what they've got nowadays. These are my faves from their new stuff:
Posted by X1.
Image Source: inyofaceproudrace.multiply.com