Katie Couric: Katie Couric to guest-host 'Good Morning America'

Wake up and celebrate, morning chat show fans! Katie Couric is headed back to rise and shine television -- at least temporarily.Katie Couric is returning to mornings for one week, and "Good Morning America" has a sneak peek at what her guest-hosting stint will look like.Couric will step in while Robin Roberts is on vacation the week of April 2nd. "Jersey Shore" star will follow dreams to become a DJ on "The Pauly D Project." Pierre Thomas discusses arrest unfolding

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