As Fox Studios throws its enthusiastic support behind How I Met Your Mother by tripling its stars' salaries, the laugh track-enhanced CBS sitcom returns to the tabloid slophouse for some ratings-goosing stunt-casting.

Here's your first glimpse at lavender-belt karatetards Heidi Montag and Spencer Pratt, and amply-caboosed Armenian royalty Kim Kardashian, taping their Mother guest spots. All three will play loose caricatures of human beings (i.e. themselves), who come magically to life on the cover of a fictional celeb glossy called Them. We know! We can hardly wait either!

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