Holy six-pack, Batman! Chris Brown and Jason Derulo are known for both their dance moves on-stage, and their strict fitness regimes off-stage. But who deserves to be the Hottest (Male) Star of 2013?

Chris Brown's dancing skills have been compared to the likes of Michael Jackson and Usher. It's no wonder -- the boy has some serious moves! With a slew of hits under his belt, and collaborations with stars like Jordin Sparks and T-Pain, it seems Chris can't be stopped!

Jason Derulo overcame a serious neck injury, and his hard work paid off! The fitness guru was also a very successful songwriter before starting his own music career. Jason is packing some serious star power. After all, he did open for Lady Gaga!

Who's your pick for Hottest Star of 2013? You can vote once an hour until the polls closes on Aug. 30 at 2PM ET. The winner will go on to compete in Round 2!

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