Zac Efron Showing Abs and Talking About Rihanna (Video)

Zac Efron heats things up down under with Rihanna. Hey there, I'm Karli Bulnes. Where both stars crossed paths is in today's PopSugar Rush. Zac Efron suited up down under for the world premiere of The Lucky One in Sydney today. Fans who lined the red carpet in Sydney went wild when they got a glimpse of the star, though we'd have to say we were the lucky ones over the weekend. Zac went shirtless on his hotel balcony on Saturday and he flashed his six-pack abs again during a day of golf on Easter Sunday. Mr. Efron's been making the most of his time in Australia, though he's not the only famous face touring the country — Rihanna is also there to promote her first feature film Battleship. Zac said he heard fans roaring for Rih, but he told a local radio station that he thought they were for him at first! "I heard that she was downstairs, I heard some screams going on and was like whoa the premiere's not for a long time!" Zac will next visit Melbourne before heading back to LA. The Lucky One will be in theaters on April 20th