Mimi and Kevin (2001-02)
Whoda thunk perky, peppy Mimi, best pal to uber-popular Belle and a wannabe member of the "in" crowd, would dare be seen with nerd extraordinaire Kevin? Well, we certainly didn't, and neither did she. But when Meems kissed bumbling, stuttering Kev (to bribe him into helping her and Jan get revenge on Chloe) and got a view of his buff pecs, her go-to geek suddenly became tres chic. Mimi soon learned that smart is sexy and stopped caring so much about what her peers think of her. Though she and Kevin have since broken up (he's in college in California), she has moved on to another hunky genius, Rex. Talk about having mind and matter.