Ian Ziering Makes Guest Appearance in Olivia Newton-John’s “Summer Nights” at Flamingo Las Vegas

Ian Ziering Makes Guest Appearance in Olivia Newton-John's "Summer Nights" at Flamingo Las Vegas
On Tuesday, July 1, actor Ian Ziering made a guest appearance in Olivia Newton-John’s Summer Nights show at Flamingo Las Vegas (Photo credit: Denise Truscello / WireImage / www.DeniseTruscello.net)

Ian Ziering, of Sharknado and 90210, is also performing in Chippendales at The Rio All-Suite Hotel through July 20.

Ian Ziering makes guest appearance in Olivia Newton-John's "Summer Nights" at Flamingo Las Vegas
Ian Ziering makes guest appearance in Olivia Newton-John’s “Summer Nights” at Flamingo Las Vegas

Photo credit: Denise Truscello / WireImage / www.DeniseTruscello.net.

Ian Ziering makes guest appearance in Olivia Newton-John's "Summer Nights" at Flamingo Las Vegas
Ian Ziering makes guest appearance in Olivia Newton-John’s “Summer Nights” at Flamingo Las Vegas

Photo credit: Denise Truscello / WireImage / www.DeniseTruscello.net.

Ian Ziering makes guest appearance in Olivia Newton-John's "Summer Nights" at Flamingo Las Vegas
Ian Ziering makes guest appearance in Olivia Newton-John’s “Summer Nights” at Flamingo Las Vegas

Photo credit: Denise Truscello / WireImage / www.DeniseTruscello.net.

Ian Ziering makes guest appearance in Olivia Newton-John's "Summer Nights" at Flamingo Las Vegas
Ian Ziering makes guest appearance in Olivia Newton-John’s “Summer Nights” at Flamingo Las Vegas

Photo credit: Denise Truscello / WireImage / www.DeniseTruscello.net.

Olivia Newton-John and Ian Ziering backstage at Flamingo Las Vegas
Olivia Newton-John and Ian Ziering backstage at Flamingo Las Vegas

Photo credit: Denise Truscello / WireImage / www.DeniseTruscello.net.