Sam Callahan's shirtless Snapchats appear online

Shirtless Snapchats of X Factor singer Sam Callahan have appeared online. The 20-year-old has apparently been sending out pictures to fans on the photo messaging app - and one recipient has been kind enough to screenshot them and upload them online. Take a look at the singer in all his shirtless glory below: Sam1Sam3Sam2 If you want to see more of Sam Callahan, take a look at our Picture Special featuring the singer here. More 'X Factor' Fitties: ‘X Factor’ Fitties Hall of Fame: Cheeky chappy Olly Murs ‘X Factor’ Fitties Hall of Fame: Handsome Welshman Andy Williams