People Exclusive

FIRST LOOK: See Britney on How I Met Your Mother

Monday March 17, 2008 12:20 PM EDT

Britney Spears and Josh Radnor

Monty Brinton/CBS

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Britney's back at work! And PEOPLE.com has your first look at Spears during her appearance on CBS's How I Met Your Mother. In the episode airing March 24, the pop star plays a receptionist at a dermatologist's office, and she falls for one of the show's main characters, played by Josh Radnor (pictured).

Spears wrapped two days of filming last week, receiving praise from the show's cast. "She was hilarious in the table-read, and I got to see her do the run-through as well, and she was great," cast member Jason Segal said.

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