Justin Bieber on March 25, 2014 (Courtesy of Instagram)
Justin Bieber on March 25, 2014 (Courtesy of Instagram)
Justin Bieber on April 9, 2014 (Courtesy of Instagram)
Austin Mahone on February 1, 2014 (Courtesy of Instagram)
James Franco on April 18, 2014 (Courtesy of Instagram)
James Franco on April 26, 2014 (Courtesy of Instagram)
Jared Leto on April 20, 2014 (Courtesy of Instagram)
Niall Horan on October 2, 2013 (Courtesy of Instagram)
Nick Jonas’ body. Tha (Courtesy of Instagram)
David Beckham on April 22, 2014 (Courtesy of Facebook)
Louis Tomlinson on October 4, 2013 (Courtesy of Instagram)
Liam Payne on May 28, 2013 (Courtesy of Instagram)
Ryan Lochte (Courtesy of Instagram)
Derek Hough on July 16, 2013 (Courtesy of Instagram)
Justin Bieber (Courtesy of Instagram)
Jax Taylor (Courtesy of Instagram)
Brody Jenner (Courtesy of Instagram)
Ian Somerhalder (Courtesy of Instagram)
Keegan Allen (Courtesy of Instagram)
Jef Holm (Courtesy of Instagram)
Chris Pratt, that gym tim (Courtesy of Instagram)
Donnie Wahlberg (Courtesy of Instagram)
Joe Jonas has been working out! (Courtesy of Instagram)
Shia LaBeouf (Courtesy of Instagram)