June 03, 2011 03:00 PM

Courteney Cox came out to support estranged hubby David Arquette at his Beacher’s Madhouse bash inside the Hollywood Roosevelt Hotel – and the two spent plenty of time together. The Cougar Town star was one of the first guests to arrive, and took in the vaudeville show from the front row. At one point, Cox, who was sipping on vodka drinks, danced with Arquette on a ledge as she sang along to the music. Says an onlooker, “They looked so comfortable together – and like there was still a spark.”

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