Billie Eilish [1] isn't just one of 2019's top artist's, she's one of 2019's top Halloween [2] costumes. The spooky holiday hasn't even happened yet, but we're already seeing celebrities step out sporting some of Billie's most iconic looks [3]. Case in point: Nina Dobrev [4]'s costume at Friday night's Casamigos Halloween Party in Beverly Hills.

The 30-year-old actress paid tribute to Billie's style [5] in a monochromatic orange ensemble, and she spared no detail. Nina nailed the singer's neon green roots and signature scary music video makeup, and her bright Louis Vuitton sweatshirt screamed "Billie!" Louis Vuitton appears to one of Billie's favourite designers (she even had a Louis Vuitton birthday cake [6]!) so this was the perfect way to tie the outfit together. Well done, Nina!

Ahead, see more of Billie's Louis Vuitton looks and snaps from Nina's night at the Casamigos party.

Nina Dobrev Wearing Louis Vuitton For Her Billie Eilish Halloween Costume

Nina Dobrev Wearing Louis Vuitton For Her Billie Eilish Halloween Costume

Nina Dobrev Wearing Louis Vuitton For Her Billie Eilish Halloween Costume

Nina Dobrev Wearing Louis Vuitton For Her Billie Eilish Halloween Costume

Nina Dobrev Wearing Louis Vuitton For Her Billie Eilish Halloween Costume

Nina Dobrev Wearing Louis Vuitton For Her Billie Eilish Halloween Costume

Nina Dobrev Wearing Louis Vuitton For Her Billie Eilish Halloween Costume