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Charlize Theron

John Sciulli/Getty Images for Nasty Gal

Charlize Theron and Sean Penn enjoyed a date night out in Hollywood Thursday evening with his daughter Dylan Penn.

The cute couple, who have been dating now for just under a year, attended the launch party for the new Nasty Gal Melrose store last night. "They were so cute," a source tells E! News of Sean and Charlize, who were "holding hands" during much of the bash. "He watched her while she shopped."

In addition to the hand holding, the 39-year-old actress played with her man's ear at one particularly precious PDA moment during the night.

Charlize Theron, Sean Penn

Dimitrios Kambouris/Getty Images for One View

As for her stylish duds, the insider tells us Charlize looked "gorgeous" in a black Nasty Gal dress that showed off her long legs. She completed her chic look with a beige jacket and black heels. The blond beauty posed for pics while browsing the racks but didn't snap any photos with Sean.

In addition to the lovebirds and his daughter Dylan, other celebs who were in attendance last night included Christina Milian, Azalea Banks, Christa B. Allen, Peyton List and Zac Efron's girlfriend Sami Miró.

Meanwhile, Sean and Charlize were recently photographed together in South Africa filming their upcoming flick The Last Face.