The Star Is Born cast just got even more star-studded.

Halsey revealed via Twitter on Wednesday (September 5) that she has a small part in the upcoming drama, which features Bradley Cooper alongside Lady Gaga in her first leading film role.

"I guess now is a good time to finally tell you guys that I have a little cameo in A Star Is Born! " the 23-year-old singer tweeted. "Thank you so so much to Gaga and Bradley for including me. It was an honor to watch both of your talent and dedication on set. an all time life highlight for me for sure."

Responding to a fan inquiry, Halsey explained she plays herself "for a very small moment."

"[It's] insane because it means Gaga and Bradley saw me worthy of representing a piece of the current state of music in this film forever," she continued. "They could have picked any artist. It was so humbling and unreal."

A remake of 1937 movie of the same name, A Star Is Born marks Cooper's directorial debut. It follows a seasoned musician (Cooper) who meets and falls in love with struggling singer Ally (Gaga), and must navigate their relationship as her fame rises and his wanes.

A Star Is Born hits theaters October 5. See Halsey's tweets below.

Halsey at the 2018 Playboy Midsummer Night's Dream Event