Look out boys, the hormones are gonna be raging on the set of CBS’s hit show How I Met Your Mother. Not only is star Allison Hannigan pregnant, so is her TV BFF Cobie Smulders.

Smulders, 26, who plays Robin Scherbatsky on the CBS hit, is due in late spring, Smulders’s rep confirms exclusively to PEOPLE.

The cast and crew of the very funny sitcom ‘How I Met Your Mother‘ squished up and made room for Kim Kardashian’s big booty last week.

Kim is set to guest star on an upcoming episode with Heidi Montag and Spencer Pratt. Read more about it HERE.

Playboy Playmate and former girlfriend of The Hef himself Kendra Wilkinson, will guest star on a C-list star studded episode of CBS’s How I Met Your Mother.

Kendra will join Kim Kardashian and Heidi Montag and Spencer Pratt from The Hills on this special guest star episode. Kendra will play a magazine cover-version of herself. Marshall (Jason Segel) will happen upon her as he searches for a place to read while working.

I guess that Britney Spears thing panned out so well for them last season that they thought they would carbo-load on reality stars this time.

Kim Kardashian is trying to make the cross-over from reality television to real television.  Along with Heidi Montag and Spencer Pratt, Kim will be taping a guest appearance on the CBS sitcom How I Met Your Mother this week.

If you remember kids, Kimbo was recently booted off Dancing with the Stars and her entire family are stars in their own minds of Keeping Up With The Kardashians.

“I am beyond exited to be taping an episode of How I Met Your Mother.  I absolutely love the show and am thrilled for this fabulous opportunity.”

Please, please writers…have her hooking up and getting dumped by Barney in a really, really mean way.