Only here at X17online would we crop in on Justin Bieber's booty crack as seen through his underwear as his droopy drawers drop dangerously low ... 'cause that's just how we roll!

We love us some Justin and the fact he's still rocking to extremely low waist-line makes us love him even more! Biebs was back in the studio Tuesday, with a bright purple backpack carrying his laptop with new beats on it but what caught our eye were those tighty whiteys!

Meanwhile, Justin's wife Hailey was looking a lot more polished, stepping out of the hair salon looking AMAZING!

We love her new look! Her wavy blonde locks looked luscious and her outfit was on-point, as usual, as she headed to meet up with her hubby in their brand new Mercedes G-Wagon. Beauty!