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Sharon Osbourne to Guest-Star on NBC's 'Up All Night'

Feb 17, 2012 | 3:40pm EST

Sharon OsbourneThe Talk co-host Sharon Osbourne will guest-star on an upcoming episode of NBC's sitcom Up All Night.

According to The Hollywood Reporter, Osbourne -- also a judge on America's Got Talent, which, lest we forget, will feature Howard Stern next season -- will play fellow talk-show diva Ava's (Maya Rudolph) archenemy on a yet-to-be-scheduled episode.

Up All Night, which airs Thursdays at 9:30 p.m. on NBC, stars Will Arnett and Christina Applegate as a married couple trying to navigate the tough terrain that is new parenthood.

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