Rachel Uchitel's Impulsive, Fun Las Vegas Wedding

Rachel Uchitel and boyfriend Matt Hahn got married impulsively Sunday, after attending the wedding of one of their friends.

We broke the story about the marriage, and now we know the details. Rachel and Matt went to the marriage bureau at the courthouse on Sunday to get a marriage license, then went to the legendary Little White Chapel in Las Vegas, where Bruce Willis married Demi Moore, and Britney Spears married whatshisname.

At 11 PM Sunday, Rachel, Matt and 12 friends danced into the chapel to the song, "Single Ladies." After the ceremony, they danced out of the chapel to the song, "That's What You Get for Waking Up in Vegas."

They didn't party afterwards. Rachel and Matt went back to her grandmother's house at midnight, where they were staying.