David Arquette, Courteney Cox, Coco Super-Happy Family at DWTS

 ABC; Fame Pictures

So amicable it's almost confusing!

For his Dancing with the Stars debut on Monday, David Arquette had two lovely ladies cheering the loudest for him: his daughter Coco, 7, and estranged wife Courteney Cox.

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"I thought David did such an amazing job," Cox, 47, told Us Weekly after the show. Arquette, 40, and partner Kym Johnson scored a middling 18 out of 30 points for their Viennese waltz. "It's the most nerve wracking thing I've ever experienced and I'm so proud. I loved it. He had such grace and such style," Cox added.

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The Cougar Town star added that Coco loved being part of the special night. "She is really excited to be here — she is proud of her dad. It was really fun for her."

"It meant a lot to have [Courteney] and Coco here tonight," Arquette told Us.

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After 11 years of marriage, Cox and Arquette announced they were separating back in October 2010. But while both have since been frank about their marital woes — and Cox spent a high-profile vacation in the company of sexy Cougar Town costar Josh Hopkins — they've remained completely friendly.

Indeed, perhaps even Coco herself isn't always clear about her parents' dynamic lately. In one interview, Arquette gushed of his daughter: "She's the light of my life!"

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Overhearing, an excited Coco turned to her mom and said "He's talking about you!"

"No," Cox said, correcting her. "Dad's talking about you!"

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