Producer thrilled when Britney wanted to audition

March 24, 2008 2:30:11 PM PDT
Hearing that Britney Spears wanted to audition for a guest shot on "How I Met Your Mother" made the executive producer feel like he was "hallucinating." Carter Bays tells USA Today that he thought he'd give the part to an up-and-coming actress. Instead, he says, he chose "the most downloaded person in the world."

He says Spears was "professional" and came across in the role as "very vulnerable and sweet."

You can see her tonight, playing a receptionist who has a thing for Ted.

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