The original Osmond Brothers — Alan, Wayne, Merrill, Jay — will perform together for “the last time” on Monday's episode of “The Talk,” according to their sister, Marie.

Marie Osmond joined the CBS series (weekdays, 2 p.m., Ch. 2) in September, and she's got a big birthday coming up. She turns 60 on Sunday. And on Tuesday, she told viewers she asked her brothers “if they would come to 'The Talk,' and the four original brothers will perform for the last time ever, for my birthday. They're over 60 years in the business and this will be the very last time they will all perform together."

Alan Osmond, 70 (who has multiple sclerosis and uses a wheelchair), and Wayne Osmond, 68 (who was successfully treated for a brain tumors two decades ago and has hearing loss), have largely retired, although they did perform for Marie’s birthday a year ago. Merrill Osmond, 66, and Jay Osmond, 64, continue to tour and perform, together and separately.

Their only sister credited her big brothers for the successful careers that she and Donny enjoyed.

“If you really go back to the beginning, none of us would have been here without the four original Osmond brothers,” Marie Osmond said.

Marie and her brother, Donny, who turns 62 in December, will complete their 11-year run at The Flamingo in Las Vegas on Nov. 16. Her younger brother, Jimmy, 56, suffered a stroke while performing in the United Kingdom last December.