There's good news for Shenae Grimes: she won't be the worst actress on the season three premiere of 90210!

The CW has announced that all three Kardashian sisters - Khloe, Kourtney and Kim - will guest star on the first September episode of this drama, as it debuts this fall in its new Monday night time slot.

The attention-loving siblings will portray themselves on 90210, though there's no word yet on what brings them into the picture.

Kim has appeared on such network shows as Brothers, How I Met Your Mother and CSI: NY. This appearance will mark Khloe and Kourtney's first gig on a primetime series, but let's face it:

All three are expert script readers, considering their experience on reality television.

Are you excited, or digusted, by this guest-starring news? Sound off now in the Comments section below and in our 90210 forum!

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.