Who looks fine, and who should be fined?

Rihanna Finds It's Easy Being Green

Mon., Mar. 31, 2008 1:12 PM PDT by Mayrav Saar

Kevin Mazur/WireImage.com

Rihanna was one of the few stars at the Nickelodeon Kids' Choice Awards ceremony on Saturday night who avoided being slimed (the singer was well protected under her umbrella-ella-ella).

But that doesn't mean she didn't get into the spirit of the gross-out, gak-eriffic evening: Check out those fingernails! The fashion plate floored us by matching her fantastically hued phalanges so perfectly with the buckets of slime Nick's famous for.

Normally, matching your cosmetics to anything that oozes is not a plus. How she pulls it off, we don't know...Ugh! Pfff! (Get it? "We don't know." Slime? Sigh. We're old.)