Hard at work on the set of her hit show, Taylor Momsen was spotted on the "Gossip Girl" in New York City on Monday afternoon (September 14).

Wearing a leather jacket, some short shorts, fishnet stockings and high heels, the Jenny Humphrey hottie was oined by Connor Paolo as the two worked alongside one another at the Metropolitan Museum of Art.

Meanwhile, you can catch Miss Momsen and her Upper East Side co-stars during the show's season premiere on Monday night (September 14) at 9/8C on the CW.

Titled "Reversal of Fortunes," a description of the season opener per the CW Web site tells: "As the summer is drawing to a close, Blair (Leighton Meester) and Chuck (Ed Westwick) are madly in love and adjusting to their new "in a relationship" status, breaking all traditional rules of dating as would be expected. Serena (Blake Lively) returns from her European adventure with many secrets to hide and a complicated relationship with Carter Baizen (guest star Sebastian Stan). Nate (Chace Crawford) returns from his travels with a mysterious brunette, Bree Buckley (guest star JoAnna Garcia) in tow. Rufus (Matthew Settle), Dan (Penn Badgley) and Jenny (Taylor Momsen) spent the summer in the Hamptons, adjusting to the van der Woodsen's glamorous lifestyle surprisingly faster than any of them expected."

Celebrity Gossip

Enjoy the pictures of Taylor Momsen on the set of "Gossip Girl" (September 14).