She performed a song from The Nightmare Before Christmas over the weekend alongside its creator Danny Elfman.

And on Tuesday night, Billie Eilish, 19, stepped out to attend the Gucci Love Parade show at TCL Chinese Theatre in Los Angeles alongside Dakota Johnson, 32.

The pair dazzled in elaborate outfits and cosied up for photographers at the star-studded event.

Wow: On Tuesday night, Billie Eilish , 19, stepped out to attend the Gucci Love Parade show at TCL Chinese Theatre in Los Angeles alongside Dakota Johnson, 32

Billie donned a floor-length gown that featured lace detailing throughout; she added a long scarf in the same color.

The Grammy winner wore a beaded yellow headpiece over her short platinum blonde tresses.

Billie sported rosy blush on her cheeks, beneath brown smokey eye makeup and paired with glossy pink lips.

The artist posed with Dakota, who donned a feathered black jacket with a see-through silver and nude bodysuit.

Dakota Johnson is fashion forward in feathers at Gucci Show

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Chic: The Happier Than Ever singer wore a burgundy colored dress for the outdoor runway show

Beaming: Dakota and Billie pictured at the show

Billie also posed alongside another attendee, Miley Cyrus.

Miley donned a sparkling blue dress that featured a unique light green belt that appeared to be oversized.

The singers beamed and posed along each other with Billie rocking the signature Miley tongue out photo pose.

Miley Cyrus dons blue floor-length tinsel gown for Gucci show

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Pop stars: Billie also posed alongside another attendee, Miley Cyrus

Over the weekend, Billie performed a song from The Nightmare Before Christmas during a concert at the Banc of California stadium.

The show was for the live-to-film concert experience.

She performed Sally’s Song from the movie alongside its creator Danny Elfman.

Jared Leto, Macaulay Culkin and more walk Gucci runway in LA

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Focused: Billie sitting with Dakota Johnson and Diane Keaton in the front row of the show

Halloween fun: Over the weekend, Billie performed a song from The Nightmare Before Christmas during a concert at the Banc of California stadium; seen on Halloween