Cruel Intentions star Selma Blair moved Dancing with the Stars to tears on US television on Monday night as she bowed out of the programme due to health concerns related to her multiple sclerosis.

The actress, who announced in 2018 that she had been diagnosed with MS, said her body is "taking a hit" by competing on the dance show.

"I've been monitored and in touch with my doctors... I had these MRIs and the results came back, and it just all adds up to... I can't go on with the competition. I've pushed as far as I could," she told her professional dance partner, Sasha Farber.

The 50-year-old said she wanted to have a "last beautiful dance" with Farber.

"You're my champion" Screengrab: Disney+

"If you want to dance, you know it would be my honour," Farber replied. "My main worry, it's your health. You're my champion."

"This is a dance for everyone that has tried and hopes that they could do more, but also, the power in realising when it's time to walk away," Blair explained. "I am so, so grateful to be able to do one last gentle dance."

With the audience, celebrities and professionals in tears, Blair and Farber danced the Waltz to What the World Needs Now is Love.

The 50-year-old said she wanted to have a "last beautiful dance" with her professional dance partner, Sasha Farber Screengrab: Disney+

For their performance, Blair and Farber received the perfect score of 40 from the judges.

"I'm not crying about a mirrorball - I have so much better than a mirrorball here," Blair said in an interview with Entertainment Tonight after her dance.

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"I'm crying because I will truly miss this. I will miss loving them. I love these dancers. I love these celebrities. I love Sasha. I love our rehearsal room. I mean, it's a lot of love and to walk away, to have to let the love continue without you, it's like, 'Oh...'"

Among those to pay tribute to Blair was her friend and Cruel Intentions co-star Sarah Michelle Gellar.

"Long before @dancingwiththestars I knew you were a ten, and now the world knows," Gellar wrote on Instagram.

"Selma I've never been so proud of you (and I'm often proud of you) You make the rest of us believe that we can do anything. That we can never give up."

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