Aunt Julia must be so proud and honored!

Emma Roberts was among the many, many celebs flocking to Hollywood insider Mike Meldman's annual Halloween bash in Los Angeles on Friday Oct. 26.

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The We're the Millers actress, 22, hit the party with boyfriend, American Horror Story star Evan Peters, and channeled one of the most iconic movie characters of all time: Vivian Ward, the good-hearted prostituted immortalized by her aunt Julia Roberts in Pretty Woman, the smash 1990 film that made the actress, 45, a superstar. (Roberts was just 24 when was nominated for an Oscar for the role opposite Richard Gere.)

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Specifically, Emma wore a blonde bob wig, knee-high leather boots, skimpy miniskirt and a white, midriff-baring tank top (featuring a gold ring that cinched the shirt to her skirt) as she held hands with Peters, who went to the bash as a cowboy.

Emma (whose actor dad Eric Roberts is Julia's older brother) has taken her very famous lineage in stride.

"I'm just doing my own thing," the Scream 4 actress told Us Weekly in 2011. "I don't really compare it to what my aunt does, but I do admire her and love all her movies."

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Inside the party, Roberts and Peters mingled with the likes of Paris Hilton, Hilary Duff and husband Mike Comrie, Rosie Huntington Whitely, Ryan Seacrest and girlfriend  Julianne Hough, Cindy Crawford and Rande Gerber, Dax Sheperd and fiancee Kristen Bell, Chris Martin, Derek Hough and others.

This article originally appeared on PICTURE: Emma Roberts Dresses as Aunt Julia Roberts in Pretty Woman for Halloween