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Lauren Jauregui looks like she had a good time at the club ... tearing it up right by the stage for all to see.
The singer hit up Drai's nightclub at The Cromwell in Vegas Friday night and fully indulged in the party scene -- bottle and joint in hand, dancing with hot chicks... and more dancing by herself.
The last time we saw Lauren she was also drunk in Glasgow at 2 PM feeling her girlfriend up and then in the studio working on her fourth album.
Clearly, she took a break from the hard work to have some fun.
