Eric Decker Pics (Courtesy of E!)

Big Sean, Jan 17. (Courtesy of Instagram)

Big Sean, Jan 17. (Courtesy of Instagram)

Justin Bieber for Calvin Klein (Courtesy of Mert Alas/Marcus Piggott/Calvin Klein)

Justin Bieber for Calvin Klein (Courtesy of Mert Alas/Marcus Piggott/Calvin Klein)

Justin Bieber for Calvin Klein (Courtesy of Mert Alas/Marcus Piggott/Calvin Klein)

Justin Bieber for Calvin Klein (Courtesy of Mert Alas/Marcus Piggott/Calvin Klein)

Justin Bieber for Calvin Klein (Courtesy of Mert Alas/Marcus Piggott/Calvin Klein)

Justin Bieber for Calvin Klein (Courtesy of Mert Alas/Marcus Piggott/Calvin Klein)

Nick Jonas in Flaunt Magazine (Courtesy of Yu Tsai/Flaunt Magazine)

Kendall Jenner, Dec. 3, 2014 (Courtesy of Instagram)

Emily Ratajkowski (Courtesy of Instagram)

Gigi Hadid, October 20, 2014 (Courtesy of Instagram)

Ciara, October 3, 2014 (Courtesy of Instagram)

Ciara, October 3, 2014 (Courtesy of Instagram)

Justin Bieber on July 22, 2014 (Courtesy of Instagram)

Justin Bieber on July 17, 2014 (Courtesy of Instagram)

Ashley Benson on May 22, 2014 (Courtesy of Instagram)

Rita Ora on May 11, 2014 (Courtesy of Instagram)

Justin Bieber (Courtesy of Instagram)

Kendall Jenner (Courtesy of Instagram)

Michael B. Jordan (FameFlyNet)

Vanessa Hudgens (Courtesy of Instagram)

Jhene Aiko (Courtesy of Instagram)

Miranda Kerr (Courtesy of Instagram)

Fergie (Courtesy of Instagram)

Iggy Azalea (Courtesy of Instagram)

Joe Jonas (Courtesy of Instagram)

Trey Songz (Courtesy of Instagram)

Jourdan Dunn (Courtesy of Instagram)

Ryan Lochte (Courtesy of Instagram)

Neil Patrick Harris (Courtesy of Instagram)

Mumford & Sons (Courtesy of Universal Music Group)