While Miss Piggy and Kermit the Frog may not seem like the usual suspects for Spring nail art inspiration, you may want to rethink that notion. OPI has released a set of limited-edition nail lacquers to coincide with our favorite childhood characters' latest big-screen appearance, Muppets Most Wanted. Best of all? The polish company's pros even created a set of matching nail art designs that are anything but cheesy, and we're showing you how to pull off four of them. Just wait till you see what Kermit's iconic collar looks like on your nails . . .