100 members of Osmond family appear on Oprah Winfrey show in tribute to father

"We talked about it and my father would want us all to be here," Marie Osmond told chat show host Winfrey. "He loved his family."

George Osmond planned to travel to Chicago to tape the show before he died on Tuesday at age 90 at his home in Provo, Utah.

George Osmond had nine children, 55 grandchildren and 48 great-grandchildren, Marie said. His wife, Olive, died in 2004.

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Reunion: The Osmonds united in tribute to family patriarch George

"Isn't it interesting how two people can raise a family in show business - nine children - and we still love each other," Donny Osmond said.

Alan, Wayne, Merrill and Jay Osmond first became famous as The Osmond Brothers, a barbershop quartet singing at Disneyland and on The Andy Williams Show.

Donny Osmond joined the group at age 6 and later hosted The Donny and Marie Show with his sister in the 1970s.

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Marie and Donny: 'My father would want us all to be here'

The Osmond family marked its 50th anniversary with a Las Vegas concert in August. Donny has also said the family will tour in 2008.

The youngest son, Jimmy, is also a performer.

Marie, 48, is currently a contestant on ABC's Dancing With the Stars.

Singing siblings: The '70s group reunite for their father