Blake Lively's "Gossip Girl" Final Season Filming Session » Gossip - Getting closer and closer to wrapping up her work duties on the hit CW drama, Blake Lively was back in action on the New York City set of "Gossip Girl" on Thursday afternoon (August 2).

Clad in a tank top/skirt combo, the blonde beauty assumed her Serena van der Woodsen character while teaming up with newbie Sofia Black-D'Elia as camera crews captured footage for the series' shortened sixth and final season, which will premiere on October 8th with an episode titled "Gone Maybe Gone".

The workday comes just after Miss Lively's new Gucci Première fragrance ad made its debut on the Web.

Looking gorgeous in the Nicolas Winding Refn-shot clip, the 24-year-old channeled old Hollywood for much of the thirty second clip while also being shown prancing around the desert in a high-slit midnight blue gown during another brief segment.

During a recent interview about fronting the label's newest scent, Miss Lively told WWD, "Gucci is a staple. It is a brand I have always looked up to because to me it represents strength. In their designs, in their images, in what they stand for philanthropically, and especially in their fragrance. I couldn’t be more proud to be working with Gucci and its heart, Frida.”

Quite pleased with the choice, Gucci's creative director, Frida Giannini, said, “Although she’s young, she’s also very determined, and I liked this spirit. She knows how to be a diva in the right sense, with an aspirational glamour.”