Actress Kate French has been cast on Gossip Girl, according to celebrity news magazine OK!, and like other recent guest stars, it looks like she could stir up trouble.

On Gossip Girl, Kate will play Elle, a mysterious nanny who comes to the UES and gets involved with none other than Ed Westwick’s character, Chuck Bass.

Kate currently stars on The L Word as outrageous actress Nikki Stevens, who is often seen in her birthday suit on the provocative Showtime series.

Elle’s arrival comes during a time when Chuck is emotionally unstable and spiraling out of control following his father’s death, and his uncle Jack (Desmond Harrington) isn't exactly discouraging Chuck's bad habits - or making his own motives clear.

But will Elle come between Chuck and Blair Waldorf?

No word yet on whether Kate French will be sporting the same wardrobe (or lack thereof) she's known for on The L Word during her Upper East Side stint.

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