One Direction's Zayn Malik, Harry Styles Sport New Tattoos

It was a pretty eventful weekend for the guys, who were also bombarded with bras during their L.A. concert Saturday.

The guys of One Direction are staying Up All Night on their current summer tour, which is probably giving them the kind of free time they need to get themselves into some shenanigans — including getting new ink.

1D's Zayn Malik was spotted over the weekend with a brand-new tattoo: a life-size microphone on his inside forearm, with the mic's wire wrapping around his wrist. A photo from the band's concert on Saturday in Los Angeles shows the other guys poking fun at their pal by holding up their own (real) microphones up against their arms.

Bandmate Harry Styles also reportedly got some new ink: the Temper Trap lyrics "won't stop 'till we surrender" tattooed near a star on his arm.

That wasn't the only big event from Saturday's show: While performing "Up All Night," the audience began throwing their bras at the guys. In footage posted on Gossip Cop, Zayn and Styles picked up the undergarments from the stage floor while the other guys kicked around a beach ball.

The guys will soon be done with their summer tour, which wraps up July 1 in Florida. They will be back here in the States in December for a one-off, sold-out gig at Madison Square Garden. But American fans shouldn't worry: The guys will be back in summer 2013 for their massive world tour, which kicks off in February at London's O2 arena.

"[It's] incredible," Liam Payne recently told MTV News about their current spate of tour dates. "It's the biggest show we've done as a band so far, biggest audience for our own tour. So it's amazing, absolutely amazing, incredible."

In a recent interview with Ryan Seacrest, in between talking about rumors he's dating Demi Lovato, Niall Horan shared that the guys are also working on new music, aiming for an end-of-year release date.

"We're trying to get it done," he said. "We're working on it at the moment — recording whenever we can and writing songs on the road. Hopefully, we can get it done before Christmas."