The bar is packed, the crowd boozy as Allison Moore makes her karaoke debut with an old Katy Perry hit.

Moore clutches the hand of makeup artist Constance Le as they belt out “I kissed a girl, and I liked it!”

“Yeah,” emcee Nicki Hunter interrupts. “I bet you did.”

“I was so nervous!” Moore, a busty brunette in a pair of hip-hugging jeans, says after her performance. She’d never had the nerve to sing before.

“I’ll have sex in front of people,” the star of “My Dad’s Hot Girlfriend 10” and assorted other titles explains, laughing, “but I won’t sing.”

If it’s Tuesday, it must be Porn Star Karaoke night at Sardo’s Grill & Lounge in Burbank, the iconic longtime haunt of the adult film industry. (“If ‘Cheers’ had a bar porn-style, that’s what Sardo’s would be,” says emcee Hunter, an actress in the industry.)

For the last 12 years, performers, producers, directors and crew have come to the wood-paneled bar in a strip mall off the 134 Freeway to sing — fully dressed — with their co-workers after a long day’s work.

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