Marie Osmond and her brother Donny perform their 1,000th show at the  Flamingo on May 15, 2014.
CNN  — 

After 11 years, Donny and Marie Osmond are bidding adieu to The Strip.

The singing siblings are ending their run at the Flamingo Las Vegas Hotel and Casino on November 16.

“We had no idea it would be 11 years. We started out as a six-week contract,” Donny Osmond told “Entertainment Tonight.”

He said the pair, whose “Donny & Marie” variety show aired on ABC in the 1970s, have individual projects they want to pursue.

Marie Osmond, 59, said it was immediately speculated that she and her brother, 61, are ending their show because the weren’t getting along.

“And I’m like, ‘Oh, come on. We get angry at each other every day,’ ” she said of their typical sibling squabbles. “Come on.”

To underscore that, she teased her brother when he talked about giving away copies of his music CDs at their show.

“He can’t sell them,” she joked. “He has to give them away.”