Chicago One Direction fans may be some of the luckiest on the planet. The U.K. heartthrobs thrilled their Windy City crowd when Harry Styles' bandmates ripped off his shirt!

During their show at the Allstate Arena, mischievous Liam Payne and Zayn Malik snuck up on Styles and began tugging at his white button-down shirt, ripping it open and exposing his lily-white abs to piercing screams from their fans. We don't think Harry minded too much -- he has a reputation for being naked more than any of his 1D bandmates.

This isn't the first time Styles has fallen victim to his fellow 'What Makes You Beautiful' bandmates. At a recent stop in New Zealand, every 1D member save for Niall Horan took turns pinching Styles' butt onstage.

The band are currently in the midst of their sold-out North American tour, but that's not all they're working on. One Direction are also recording a new album when they aren't making Harry blush in front of their fans!

See One Direction Rip Off Harry Styles' Shirt Onstage