Demi Moore and her new boyfriend Sean Friday packed on the PDA at Hollywood hotspot Giorgio's at the Standard Hotel Credit: Miami Pixx/FameFlynet Pictures

Still going strong! Fresh off their sexy New Year's getaway in Tulum, Mexico, Demi Moore and new boyfriend Sean Friday hit up a club in West Hollywood, Calif., where they danced, kissed, and otherwise partied the night away on Saturday, Jan. 11.

Moore, 51, looked youthful in a sexy, plunging halter top and pants, an eyewitness told Us Weekly. She and Dead Sara rocker Friday, 27, were huddled in a VIP booth at Standard Hotel hotspot Giorgio's until around 2 a.m.

At one point during the night, the LOL actress stepped up onto a platform at the club and started dancing. "She was lost in the music," the onlooker said, noting that she was especially enthused by disco tunes like Donna Summer's "Hot Stuff."

Incidentally, "Hot Stuff" is also a pretty apt description for Moore's new romance. She and her beau were "making out, smiling, and laughing," an eyewitness told Us of the "playful" twosome. 

Together since this summer, the divorced mom-of-three and the tattooed rocker were first introduced by Moore's daughter Rumer Willis, 25. "Rumer brought [Demi] to a show in Los Angeles," a source told Us of how they met. "She thought he was a fun guy her mom would like."

"It's a good match," another source said. "Sean is a stable, easygoing guy."