MTV's ‘Punk'd’ Revamp Debuts March 19 (Video)

Justin Bieber and Miley Cyrus are among the celebs who will play guest host

Ashton Kutcher will be back as a producer, but not as the host when "Punk'd" returns to MTV on March 19.

Instead, new episodes of the reality series Kutcher co-created will be introduced each week by a different celebrity. Justin Bieber, Miley Cyrus, Kellan Lutz, Bam Margera and former "Punk'd" cast member Dax Shepard will be among the guest hosts when the show returns.

Check out a sneak peek of the new episodes below, as Khloe Kardashian gets "Punk'd" with a medical emergency reminiscent of "There's Something About Mary":

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