'90210' mini-reunion at Chippendales show

Shannen Doherty, Ian Ziering and Jennie Garth got together recently for a little "Beverly Hills, 90210" reunion - except one of them wasn't wearing a shirt.

The odd man out was none other than Ian Ziering, who's been a guest star with the Chippendales revue in Las Vegas since early June.

Doherty, 42, and Garth, 41, sandwiched the topless, bowtie-wearing Ziering for a photo opp, wearing smiles that Ziering says they got from the show.

"Chippendales is a very interactive show and we managed to surprise them both by including them on stage in a few production numbers," Ziering told People magazine. "I was very flattered by their comments. And judging by their reaction, I know they had a great time."

The 49-year-old starred on "90210" with Garth and Doherty since its beginning in 1990, and stayed with the show (as did Garth) through its end in 2000.

The actor himself seems to be having a great time with the Chippendales, as he's extended his stay from June 30 to July 14.

"@Chippendales was wild Friday!" he posted on June 29. "To the Grandma in the 3rd row who grabbed my butt, I usually get dinner and a movie b4 that kinda action ;)"