urx unit loader 'How I Met Your Mother': Carrie Underwood first look
carrie underwood himym 'How I Met Your Mother': Carrie Underwood first lookCarrie Underwood takes flight on “How I Met Your Mother.”

Neil Patrick Harris tweeted Wednesday (Jan. 20): “This week’s awesome guest star: http://yfrog.com/1dmarrj HIMYM – You’ll Love The Way We Fly!” and linked to a great photo of himself and guest star Carrie Underwood.

We do know that Carrie is playing Tiffany, a pharmaceutical sales rep and potential love interest for Ted. Barney says pharmaceutical sales reps, or Pharma Girls, have replaced nurses and stewardesses as the Official New Profession of Hot Chicks.

carrie underwood himym 2 'How I Met Your Mother': Carrie Underwood first lookThat explains Carrie’s flight attendant outfit. We wonder if she’ll also be dressed as a nurse in some kind of Barney fantasy. Either way, the “American Idol” fan in us is super excited for Carrie’s episode, scheduled to air sometime in March.

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Photo credit: Neil Patrick Harris