Will it be love in the City of Lights for Gossip Girl's Serena?

Not if she can help it, as a new clip from Monday's premiere shows.

Leaving former flames Nate and Dan behind in New York City, Serena (Blake Lively) joins BFF Blair (Leighton Meester) for a summer jaunt to Paris to clear her head before leaving for college.

And while Blair tries her hardest to hook her pal up on their Parisian getaway, all Serena is lusting after is labels.

"When you asked me on this trip, you promised me retail therapy -- I fell asleep thinking about guys named [Christian] Louboutin and [Yves St.] Laurent. Home doesn't exist until we're there," she tells Blair in a clip from the all-new episode. (Watch above)

Later, the girls ponder the future of their friendship.

Can they leave their "high school pettiness" behind?

Find out when Gossip Girl's fourth season premieres Monday at 9 p.m./ET on the CW.

-- By Allison Corneau for UsMagazine.com. For more Channel Surfing, click here.