The Sisters Kardashian will make a guest appearance on the forthcoming third season of The CW teen soap 90210 this September. Kim, Kourtney and Khloe will all have cameos in the upcoming third season premiere.

Vixen sis Kim posted a snapshot of the girls’ taping to her Official Blog on Monday. Here are Kim and Khloe posing alongside 90210 regular AnnaLynne McCord:

“Right now we are on the set of 90210 filming with AnnaLynne McCord and the rest of the cast! So fun!”

“It was such an honor to guest star on a hit show that so many people tune in to every week!!” Khloe wrote on her website. “We played exaggerated versions of ourselves which obviously wasn’t too difficult to do but we were both still a little nervous,” says the newlywed, who has struggled memorizing some of her lines.

Too bad, she didn’t enlist a little assitance from Kim. The most buxom member of The Kardashian Klan has tested her acting chops for appearances on CSI: NY, Beyond The Break, and 2007′s Disaster Movie.

90210 returns for its third season on Sept. 13 @ 8/7c on The CW.