Katy Perry on How I Met Your Mother: Promos

Katy Perry will join Spencer Pratt, Kim Kardashian, J. Lo, Carrie Underwood and Britney Spears on How I Met Your Mother's list of big-name guest stars next week.

If the How I Met Your Mother quotes on the episode itself are as funny as these quick promos with cast member Neil Patrick Harris, we should be in for a treat.

At least Neil waited until the second spot before blatantly harassing her. And no, she's not "The" mother ... we think. That third promo's got us thinking!

Katy Perry HIMYM Promos