Why is Donny Osmond so determined to make it to the Dancing with the Stars finale? Sibling rivalry, he admitted to OK! on Monday night.

Donny told the judges after his disappointing tango performance on the show’s semi-finals that he was distracted by his sister, Marie Osmond, who was watching him from the audience. Marie appeared on DWTS herself in 2007 and made it to the finals, finishing third.

And Donny told OK! after the show that he wasn’t joking about Marie’s presence being to blame for his bum dance. “It wasn’t really a joke. It really happened.”

When asked if he was rattled by Marie, 50, watching him, Donny, 51, said, “Yeah. The whole thing about wanting to make it to the finals — the reason being is that she made it to the finals.

“And if I don’t make it to the finals, she will rub it in my face for the rest of my life. That went through my mind and I thought, okay, I’m lost. I’m gone.”

DWTS viewers watched the singer dramatically fall to the floor after his tango, for which he received a score of just 21 with his devoted partner and OK! blogger Kym Johnson.

But it wasn’t because he was fainting, as his sister famously did on Season Five of the hit ABC show. Donny was simply frustrated by not dancing well.

Donny said that Marie — who performs with him every week in their hit Las Vegas stage show — empathized with him after DWTS was done on Monday night. “She felt really bad. She was sweet. She said to just forget about it, to let it go,” the eternally youthful singer said.

And Donny proved, as his song once said, that one bad apple doesn’t spoil the whole bunch, as he rebounded on his last two dances, scoring a 26 for his samba and a 27 for his jitterbug.

Still, the perfectionist entertainer remained upset about his first, worst dance of the night, and revealed to OK! he probably would lose some sleep over it. “I’ll be on the phone all night with my wife,” he sighed. “She’ll be consoling me.”

But Donny’s huge fan base has pulled him through all season. Tune in to DWTS on Tuesday night to see if Donny is able to get voted through to the finale—which means he will finish no lower than third, at least matching Marie’s strong finish and with the chance to go even higher.

By Carole Glines

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