The Backstreet Boys took the title of their latest single, 'Show 'Em (What You're Made Of),' to heart, showing some serious skin in the official video for the song.

Hey, BSB aren't the No. 1 selling boy band of all time for nothing! Give the fans what they want, and they'll continue to support you for two decades (and counting).

The new clip was posted on the band's Facebook page today (Nov. 19) with the note that "this song is very personal and special to us."

The video shows one guy at a time in a simple black background. They sing and gesticulate their hearts out, truly selling the song. Howie Dorough and Kevin Richardson opt for plain black tees while Nick Carter shows off his muscles and tattoos in a tank top. But best of all? Both Brian Littrell and A.J. McLean (talk about tats!) are completely shirtless!

'Show 'Em (What You're Made Of)' is the second worldwide single off their latest album, 'In a World Like This.' BSB play a handful of U.S. concerts before heading overseas for a European trek starting in February. Check out all their tour dates.