Dancing Pair Have Bachelor, Bachelorette Party in Vegas

Dancing Pair Have Bachelor, Bachelorette Party in Vegas
Alec Mazo and Edyta Sliwinska
Denise Truscello/WireImage

08/13/2007 AT 04:15 PM EDT

Before they waltz down the aisle in September, Dancing with the Stars alumni Alec Mazo and Edyta Sliwinska took their love to Las Vegas for a joint bachelor and bachelorette party over the weekend.

Along for the celebration was Mazo's Dancing partner (and season one champ) Kelly Monaco, Cheryl Burke with boyfriend Matthew Lawrence, Kym Johnson and Karina Smirnoff.

The group arrived Saturday, got settled into a suite in the Planet Hollywood Hotel and immediately parted ways, according to a source. The girls went off to the hotel's Heart Bar and later partied at Moon Nightclub at the Palms, while the guys took their party to a boat at nearby Lake Mead.

During the most recent season of Dancing Mazo was partnered with model Paulina Porizkova, and Sliwinska danced with former Cheers star John Ratzenberger.

The parties wrapped up on Sunday in true bachelor/bachelorette party style – relaxing at Bare, a top-optional pool at the Mirage, followed by some gambling.

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