Inside Jack Osbourne’s Bachelor Party in Las Vegas!

Jack Osbourne on September 3, 2011 in Playa del Rey, California. Jason LaVeris/FilmMagic

What better place to celebrate a bachelor party than Las Vegas?

Jack Osbourne kicked off his bachelor party last Thursday by taking a road trip from Los Angeles to Vegas with a group of his best friends.

"Let the games begin!" he tweeted Sept. 22. "Palazzo Las Vegas Bachelor party."

An insider told Us Weekly the guys enjoyed a private cabana and soaked up the Las Vegas at Azure Pool at the Palazzo on Saturday. Later that day, Osbourne tweeted, "This. Is. Awesome! Heading to Lagasses Stadium at Palazzo Las Vegas to watch the UFC fights. Bachelor party."

The source told Us, "They dined on Oktoberfest food including Munich Brat, Potato Salad paired with some beers (which Osbourne passed on drinking)."

"It wasn't a regular Vegas bachelor party," the source added. "The group woke up early on one of the days to go hiking and ATVing. It was more of an adventure bachelor party. No nightclubs included."

And it sounds like it was exactly what Osbourne wanted! "Best bachelor party weekend ever! Thank you Palazzo Las Vegas!" he tweeted with a photo of all his friends.

Jack Osbourne
Twitter/Jack Osbourne

Osbourne, who announced he had been diagnosed with multiple sclerosis in June, became engaged to Lisa Stelly in Sept. 2011. The couple welcomed their first child together, daughter Pearl, on April 24.

While Osbourne was enjoying his bachelor party, Stelly was having fun at her bachelorette party. The bride-to-be tweeted to her husband-to-be on Sept. 23, "My bachelorette party is better than your bachelor party."

"Thanks Kelly Osbourne for my diamond encrusted riding crop. I'm obsessed with it, I can't put it down," she added. "Best party ever! Woo hoo!"

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