U.S. rocker and "The Voice" coach Adam Levine was declared People magazine's 2013 Sexiest Man Alive Wednesday. Levine, 34, is the front man for the music group Maroon 5 and the fiance of model Behati Prinsloo. Also featured on the magazine's Sexiest Men Alive list are British actor Idris Elba, country music star Luke Bryan, comedian Jimmy Fallon, pop star Bruno Mars, HGTV stars Jonathan and Drew Scott, singer Justin Timberlake, actor Chris Pine, rapper Pharrell Williams and TV personality Ronan Farrow.