Zac Efron: Shirtless in Sydney!

Zac Efron shows off his toned torso as he hangs out shirtless on his hotel balcony on Sunday (April 8) in Sydney, Australia.

The 24-year-old actor, who rocked a pair of Skullcandy Aviator headphones, is currently staying at the same hotel as Rihanna, which features views of the Sydney Harbour Bridge and Sydney Opera House!

Earlier in the day, Zac arrived on a flight from Los Angeles.

Zac is on a promo tour for his upcoming movie, The Lucky One, which hits theaters on April 20. Be sure to check it out when it’s released!

10+ pictures inside of a shirtless Zac Efron…