The 27-year-old actress and 37-year-old musician were spotted as they made their way through LAX airport on Friday (June 30) in Los Angeles.
The day before, Brie shared a hilarious Funny or Die video where she tries to join Haim.
Brie plays the fourth Haim sister who is desperate to join the band, so she meets up with Este, Alana, and Danielle, to beg to let her in.
“FRIME HAIM IS HERE BABY!!! I love my sisters,” Brie wrote on her Instagram, along with the video.