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How I Met Your Mother, Kendra Wilkinson

Sonja Flemming/CBS, Gregg DeGuire/Getty Images

Who know that Kendra Wilkinson had a Mother complex?

The Girls Next Door vixen plans to join fellow reality stars Heidi Montag, Spencer Pratt and Kim Kardashian in a guest appearance on CBS' How I Met Your Mother.

Wilkinson is filming her cameo today, E! News has learned. No word what part the blonde beauty plays in the storyline, which is being kept tightly under wraps.

But Montag and Pratt told us yesterday that they will play themselves in a dream sequence featuring Jason Segel's character, Marshall, when he reads about the Hills duo in a copy of Them Weekly.

Kardashian, meanwhile, shot her scene in front of a green screen and no other HIMYM actors were involved.

Wilkinson, 23, made headlines last month when she announced her split from Playboy founder Hugh Hefner and engagement to Philadelphia Eagles receciver Hank Baskett.

The How I Met Your Mother
special is scheduled to air in January.