Though primarily known as Blair Waldorf on Gossip Girl, Leighton Meester is hoping to become recognized as a singer. And she already has one big musical mentor.

"Recently I've spent a lot of time with Cyndi Lauper, and she's a legend," says the actress. "She gave me the advice: Never sell your publishing, so I'll take that."

The thrill of the stage has Meester - who's worked with Lil Wayne, Robin Thicke and Adam Lambert (in addition to her hit with Cobra Starship) - hooked.

"I get more excited than nervous, and I feel like that's the best kind of energy to have," the 23-year-old said before her gig at Venetian's Tao Las Vegas.

The performance, she says, is "cute, sexy ... I'm just having the time of my life, and I hope it continues." We have a hunch it probably will do just that.

Leighton Meester has made the most of her time away from the show.

Meester began her set with the Cobra Starship song "Good Girls Go Bad," followed by "Somebody to Love," "Playing Games" and "Your Love’s a Drug."

After the performance, she headed to a sky box table overlooking the entire club,to celebrate her last night before heading back to the Gossip Girl set.

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