REVEALED!!! THE IDENTITY OF THE STRIPER JUSTIN BIEBER USED HER BREA*T AS CHEW TOY.

BEHOOOOLD ... the hot blonde stripper Justin Bieber recently used as a chew toy ... in all her fake-breasted glory ... and contrary to reports, she's definitely NOT old enough to be his mom.

26-year-old Karolina began working as a stripper in Vegas very recently after moving from Chicago -- and when Bieber quietly visited Sin City back in January (before his DUI arrest) he handpicked the bunny-tatted dancer to come back to his hotel room.

Bieber and his entourage hand-picked Karolina and two other dancers to come back to the hotel room for private dances ... and Bieber paid them THOUSANDS each in cash.

As soon as they arrived to the room, the girls' phones were confiscated and they were each required to sign one of Bieber's famous confidentiality agreements, barring the from talking about what transpired that night.

This is the picx that went viral