WATCH: Katy Perry Joins the Gang of 'How I Met Your Mother'

CBS/ 20th Century Fox
Please wait...
By JACKIE WILLIS
February 01, 2011

Katy Perry is one gullible girl!

The pop star plays the role of Zoey's (Jennifer Morrison) cousin Honey on "How I Met Your Mother" and is a bit clueless. "My apartment building is so safe. My neighbor, he even installed a security camera in the shower," Honey says. Marshall Eriksen (Jason Segel) responds, "Oh honey!"

Honey is also caught up in a love triangle between architect Ted Mosby (Josh Radnor) and the suited-up stud Barney Stinson (Neil Patrick Harris).

Katy joins a slew of other celebs to guest star on the hit show including Jennifer Lopez and Britney Spears. Catch her "HIMYM" episode airing Monday night, February 7, on CBS.

ET Flashback '85: 'Ferris Bueller'