Ariana Grande & Jason Derulo: KISS FM's Jingle Ball Dallas 2013

Ariana Grande rocks thigh-high socks while singing on stage at 106.1 KISS FM’s 2013 Jingle Ball held at the American Airlines Center at on Monday (December 2) in Dallas, Texas.

The 20-year-old actress/singer was joined at the annual event by Jason Derulo, who got shirtless during his performance!

PHOTOS: Check out the latest pics of Ariana Grande

“Dear Santa, what happened to the plan we had? I checked the news and it said it’d be a sunny day… make it go away #SnowInCalifornia,” Ari tweeted before the show.

The week before, she bundled up for her performance at the 2013 Rockefeller Center Christmas Tree Lighting Pre-Tape Ceremony held at Rockefeller Center in New York City.

20+ pics inside…