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Zac Efron Showing Abs and Talking About Rihanna (Video)

Video: Zac Efron Bares Abs and Talks Sharing a Hotel With Rihanna

Zac Efron suited up for the world premiere of The Lucky One Down Under today. See the handsome star bare his abs over the weekend and hear what he had to say about staying at the same hotel as Rihanna in today's PopSugar Rush.