Justin Bieber Gives Impromptu Performance With Tyga at L.A. Nightclub

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Justin Bieber and Tyga had the club going up on a Sunday when they decided to give an unexpected performance.

The 21-year-old pop star and 26-year-old rapper hit the stage at 1OAK in Los Angeles, Calfornia and did renditions of Bieber's hits, "What Do You Mean?"  and "Sorry."  An eyewitness said Justin started performing around 1:45 a.m., then, after 10 minutes, Tyga joined him on stage. Justin asked if the crowd was having a good time -- and advised them to "get out" if they weren't. "There were no boos at all," the eyewitness said. "It was a great, positive vibe."

WATCH: Justin Bieber Shows Concern for Kylie Jenner -- 'It's F**ked, Bro, this Lifestyle'

The women at the club might also have received a special gift from Bieber. On Sunday, he posted a pic of red roses, writing: "We got flowerz for the ladies."

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We got flowerz for the ladies and

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While we've yet to see Bieber and Tyga double date, we did spot Kylie Jenner with the rapper at 1OAK  days prior to Sunday's impromptu performance. Check out the 18-year-old reality star's sexy leather jumpsuit.

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