The theme of the event was “Karl Lagerfeld: A Line of Beauty,” and Eilish embodied this with her bold and edgy style. 

The dress, designed by a renowned fashion house, featured intricate lace detailing and a dramatic train, showcasing her signature blend of elegance and rebellion.

 Complementing her outfit, she opted for dark, smoky eye makeup and sleek, jet-black hair, enhancing the gothic vibe.

 Eilish accessorized minimally but effectively, with statement rings and a delicate choker.

 Her look was a perfect homage to Lagerfeld’s legacy, reflecting his love for dramatic and avant-garde fashion. 

As always, Billie Eilish managed to push the boundaries of red carpet fashion, making a memorable impression at one of the year's most prestigious events.