Billie Eilish's best outfits include everything from her signature grunge looks to her glam red carpet gowns. Here are her best fashion moments from 2017 to now.

Billie Eilish's green and pink Grammys outfit is inspired by a 1965 Barbie. ... Barbie doll aficionados will recognise Billie's outfit as an almost exact replica of the 1965 Poodle Parade Barbie.

From Billie Eilish's Jordans to her classic oversized outfits, we gathered pieces inspired by the singer's trendsetting style.

Billie Eilish was a Barbie girl at the 69th annual Grammy awards. Getty Images for The Recording Academy The pop singer repped the "Barbie" movie with her outfit.

Billie Eilish’s Iconic Outfits: 11 Pieces Inspired by Her Style. From Billie Eilish's Jordans to her classic oversized outfits, we gathered pieces inspired by the singer's trendsetting style.

Billie Eilish was filmed on the beach with friends in Barcelona, giving the world a rare look at her bikini style. Although ...

Eilish wore a hot pink bikini by anime-inspired brand, Soto Worldwide, to ring in the patriotic holiday. Her triangle swim top — which is currently sold out — was subtly detailed with a ...

Billie Eilish took to the Grammy Awards stage for her performance in a vintage ensemble paying homage to Barbie's fashion history before taking home the coveted Song of the Year title.

Ariana Grande wore a pink and blue Glinda-esque plaid tank top for her voting selfie. Billie Eilish wore a more realistic-looking voting outfit and dropped her ball off wearing gray hoodie ...

Billie Eilish wears a yellow '50s-inspired dress, patent pumps, and jewelry in the "What Was I Made For?" music video for "Barbie" — see her look here.

Billie Eilish looked sexy in a low-cut black slip dress with sheer Gucci ... Under her dress, Billie wore a pair of sheer black Gucci logo tights and a pair of black ... and a glossy pink lip.