4. (Juicy Couture)

Juicy Couture’s Tumblr features ultra-fun styling posts, a new guest “couturist” (read:blogger) each month, and vlogs, in addition to grabbing a slice of the personal style blogosphere (Karla Deras of Karla’s Closet collaborated with the brand for a 21-questions interview item). Juicy’s tumblr proves they’re about much more than velour track suits.