Always able to light up the room with her sweet smile, a breathtaking Taylor Momsen was spotted in costume on the set of "Gossip Girl" in Brooklyn on Wednesday (September 24).

In positive news, her hit CW drama earned "a 1.6/4 among 18-49 viewers and 2.5/7 among its key 18-34 viewers, which the network says is the show's second-best results ever - as well as second-best-ever results against more specific young female demos."

And while the 15-year-old has been spending most of her time working on the latest season of "Gossip Girl," she did take a break earlier this week with a night out on the town.

As previously reported by Gossip Girls, Miss Momsen attended the Metropolitan Opera's 125th season opening night gala at the Lincoln Center - wowing onlookers in a cherry Marchesa gown.

Gossip Girls

Enjoy the pictures of Taylor Momsen out on the set of "Gossip Girl" (September 24).