Hailey Bieber, daughter of Alec’s younger brother Stephen Baldwin, partied with husband Justin Bieber at the Hollywood bash alongside birthday girl Doja Cat and Billie Eilish
The 63-year-old actor fired a prop gun while filming his Western drama Rust killing cinematographer Halyna Hutchins and injuring director Joel Souza.
Production was shut down indefinitely following the tragic accident.
That same night, Alec’s niece Hailey, who is the daughter of his younger brother Stephen Baldwin, partied with her celebrity friends to celebrate the birthday of singer Doja Cat.
The 24-year-old model was oblivious to her family’s impending strife, rocking his and hers costumes with husband Justin Bieber.
The loved-up couple dressed as Greek gods Zeus and Hera at the bash in Los Angeles.
Leaving the party in the early hours of Thursday morning, Hailey was unaware her uncle would be involved in a tragic shooting on the set of his movie, just hours after she celebrated her friend’s 26th birthday.
Among the other famous attendees at the bash at Delilah in West Hollywood were Billie Eilish and her boyfriend Matthew Tyler Vorce, as well as Bella Hadid, Tyga, Winnie Harlow and Karreuche Tran.
Former US president Barack Obama’s daughters, Malia and Sasha Obama, were also at the party to celebrate with the Say So hitmaker.
Doja looked stunning as she rocked up to the bash dressed as Princess Kida from the Disney movie Atlantis: The Lost Empire, and according to Page Six, she downed Casamigos cocktails and cut into a Little Mermaid themed birthday cake.
Alec has yet to break his silence over the fatal accident, which killed Halyna, 42, and seriously wounded director Joel Souza, on the set in New Mexico.
The 63-year-old actor was spotted outside the Santa Fe Sheriff’s Department looking visibly distraught, and sobbing while hunched over at the side of the road.
A spokesperson for Alec said there was an accident on the set of Rust involving a prop gun loaded with blanks.
It’s also not yet known if the shooting took place while the cameras were rolling, or if it was a rehearsal.
The investigation is still ongoing, and a spokesperson for the sheriff’s department said that Alec attended an interview voluntarily. No charges have been made.
They said the 30 Rock star “came in voluntarily and he left the building after he finished his interviews”.