China Anne McClain’s black nail polish at the 44th NAACP Image Awards at the Shrine Auditorium on February 1, 2013 in Los Angeles, CA.

Selena Gomez’s long dark red nails at the “Getaway” Premiere at the Village Theater on August 26, 2013 in Westwood, CA

Katy Perry’s black and white polka dot nails matched her dress on the red carpet at the 2013 American Music Awards Arrivals at Nokia Theater on November 24, 2013 in Los Angeles, CA

Ariana Grande’s light pink nail polish in the 2013 American Music Awards Press Room at Nokia Theater on November 24, 2013 in Los Angeles, CA.

“Nail game is over. I win.”

Lily Allen’s striped geometric nails

Lily Allen’s green ombre nails with jewels

Lily Allen’s yellow and black polka dot and chevron stripe nail art by Michelle Humphrey

Zendaya in Concert at RiverRink at Penn’s Landing in Philadelphia on November 29, 2013

Demi Lovato at the “Frozen” World Premiere at El Capitan Theater on November 19, 2013 in Los Angeles, CA