She's spent most of her time in Cannes alongside her father Sean as they promote their new film.
Yet Dylan Penn had her brother Hopper for company as they attended the Louis Vuitton dinner at at Fred L'Ecailler during the Film Festival on Tuesday.
Looking every inch the showbiz family, the famous siblings had all eyes on them as they posed for snaps at the event.
Siblings: Dylan Penn had her brother Hopper for company as they attended the Louis Vuitton dinner at at Fred L'Ecailler during the Film Festival on Tuesday
Dylan, 30, looked radiant as she slipped into a little black dress that skimmed over her lithe figure.
The garment was adorned with sequin detailing on the bodice and a knitted skirt that flared out to knee length.
She boosted her frame with a pair of smart black heels and injected some glitz with a glittering silver clutch bag and chandelier earrings.
Dressed to impress: Dylan, 30, looked radiant as she slipped into a little black dress that skimmed over her lithe figure
Leggy lady! The garment was adorned with sequin detailing on the bodice and a knitted skirt that flared out to knee length
Blonde bombshell: Dylan wore her golden locks scraped up in a chic chignon bun
Hopper, 27, looked dapper as he sported a navy Louis Vuitton jacket and chinos.
The siblings have been in Cannes for the premiere of Flag Day, which is the eighth film their father Sean has directed.
The movie is a family affair with Dylan and Hopper among the star-studded cast.
Dapper: Hopper, 27, looked dapper as he sported a navy Louis Vuitton jacket and chinos
Family affair: The siblings have been in Cannes for the premiere of Flag Day, which is the eighth film their father Sean has directed
Flag Day is about a father who leads multiple lives as a counterfeiter, bank robber and con man to provide for his
