Cassadee Pope’s black nails during her blind audition of “Torn” on The Voice

Cassadee Pope’s blue nails during her performance of “Over You” live on The Voice

Cassadee Pope sings “I’m With You” live on The Voice

Selena Gomez at the Vanity Fair Oscar Party at Sunset Tower on February 26, 2012 in West Hollywood, California.

Selena Gomez arrives at the 2011 Teen Choice Awards at the Gibson Amphitheatre, Universal Studios, Hollywood on August 7, 2011 in Los Angeles, CA

Selena Gomez arrives at the 2010 MTV Video Music Awards at Nokia – LA Live on September 12, 2010 in Los Angeles, CA

Selena Gomez at the 2011 MTV Video Music Awards Arrivals at Nokia Theatre LA Live in Los Angeles, CA on August 28, 2011

Selena Gomez at the world premiere of “The Thing” at Universal Studios Hollywood on October 10, 2011 in Los Angeles, CA

Selena Gomez at the 2010 Teen Choice Awards at the Gibson Amphitheatre, Universal Studios, Hollywood on August 8, 2010 in Los Angeles, CA

Selena Gomez arriving at the 2011 Kids Choice Awards at Galen Center, USC on April 2, 2011 in Los Angeles, CA