Donny and Marie Osmond have been singing as a brother and sister act since the early 1970s. Both don’t imbibe, and possibly never did, accounting as to why both look so young. They still have their brother/sister act, which they perform mostly in Vegas these days. Marie has liberal views about marriage and out of support for her lesbian daughter, she supports LGBT rights, something not necessarily agreed to by all of the Osmonds.
You might remember that Donny starred in Joseph and the Amazing Technicolor Dreamcoat back in the ’90s. The Toronto musical eventually went on tour, and had a very successful 6-year run. Andrew Lloyd Webber was so impressed, that he chose Donny again to star in the film adaptation shot in 1999. Both Donny and Marie have been raised as Mormons, living that way their entire lives.