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Holly Madison, Jack Barakat

Courtesy: David Becker/Wire Image

Holly Madison's just stopped following Jack Barakat—in real life.

Tthe Holly's World star and the rocker, who hooked up on Twitter, have split following a short-lived affair.  

"I can confirm Holly and Jack are no longer dating," Holly's rep told E! News. "Their decision to split was both mutual and amicable."

And that explains why she was rolling without him this weekend...

The E! reality starlet  hosted a party at Chateau nightclub in Las Vegas with Brody Jenner over the weekend, where she was spotted with her Holly's World costars Angel Porrino and Josh Strickland, but without Barakat, a singer for the band All Time Low.

Madison didn't seme to mind her newly single status, posing for pics with fans, dancing and stepping into the DJ booth with Jenner to get the crowd going.