Katy Perry: UNICEF Snowflake Ball 2013 Performer!

Katy Perry strikes a pose backstage during the 2013 UNICEF Snowflake Ball held at Cipriani Wall Street on Tuesday (December 3) in New York City.

The 29-year-old singer then hit the stage as the special musical guest to perform her latest single “Unconditionally” off her third studio album PRISM.

PHOTOS: Check out the latest pics of Katy Perry

That same evening, Katy looked regal in a red Naeem Khan dress while hitting the red carpet at the ball with Christina Ricci.

Katy was just named the newest UNICEF Goodwill Ambassador!

FYI: Katy is wearing a silver embroidered Michael Kors gown.