After winning the role of Emmett Cullen in the "Twilight" series, Kellan won the heart of "90210" star AnnaLynne McCord. The duo dated off and on from 2008 to 2011. Later that year, he took up with "Step Up 3D" actress Sharni Vinson, and as of November 2012, they're still going strong. And thanks to his 2010 deal with Calvin Klein X Underwear, we can all feel as intimately knowledgeable about Kellan as any of his leading ladies. The actor scored a hit with his role as Poseidon in "Immortals," and in 2013, he has a slate of starring vehicles lined up, including the title role in a stop-animation reboot of "Tarzan."