Chace Crawford is adding another role to his resumé - the Gossip Girl hunk will star in singer Leona Lewis' video for her song, "I Will Be," filmed Thursday in N.Y. City.

"He has speaking lines in the video as well as just appearing in it," a source close to the set said, adding that, "It will be the most anticipated video in January."

So how did this unusual pair of Gossip Girl cast member and British songstress - both are 23, though she was born in London and he, in Texas - come together?

"Chace went to London a couple months ago for meetings and to promote Gossip Girl. He went to a party and ended up meeting Leona," the source reveals.

"The two hit it off and talk every once in a while and have become fast friends."

The result? "A couple weeks ago Leona called Chace Crawford and asked if he would be in her next video. He obviously said yes."

Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.