Lady Gaga and Bradley Cooper reunite! Singer suits up to support her former co-star at his Maestro premiere on red carpet along with Carey Mulligan and Maya Hawke

Lady Gaga and her former co-star Bradley Cooper reunited at a screening of his new biopic Maestro in Los Angeles on Tuesday, which was also attended by his new leading lady Carey Mulligan and his daughter Lea. 

Gaga, 37, who starred opposite Bradley in 2018 musical A Star Is Born, went shirtless under a chic black blazer with silver embellishments, and fitted black pants as she supported Bradley, 48, at the event. 

Mulligan, 38, brought the glamour in an off-shoulder floor-length glitzy navy gown with dramatic sleeves. The English actress wore her platinum blonde bob in a short straight style for the occasion.

Maya Hawke, 25, was also in attendance, and rocked a structured ballerina-style brown and white sleeveless dress, which she paired with white stockings and pink heels. 

Cooper and Mulligan’s new film Maestro follows the longtime relationship between conductor-composer Leonard Bernstein (Cooper) and actress Felicia Montealegre Cohn Bernstein (Mulligan). 

Bradley looked every inch the proud father as he held hands with the six-year-old — whom he shares with ex-girlfriend Russian supermodel Irina Shayk, 37 — during her red carpet debut. 

While Bradley opted for a classic three-piece navy suit for the occasion, Lea wore a cheetah-print dress, white ballet flats as well as a red and black crossbody purse. 

Lea also made her acting debut in the film, where she plays the younger version of Leonard and Felicia’s daughter Jamie Bernstein, who is later portrayed by Maya in the film. 

Maya — who’s the daughter of Hollywood legends Ethan Hawke and Uma Thurman in reality — styled her tresses in a shaggy mullet, and opted for black eyeliner and dark red lipstick.

Bradley and Carey appeared in good spirits as they both smiled while posing alongside each other on the red carpet.

Bradley and Carey were also seen posing with CEO of Netflix Ted Sarandos, 59, who looked sharp in a black suit. 

Sarah Silverman, 53, was a vision in a long-sleeve plum sequin gown with structured shoulders. 

Alexa Swinton showed off her toned legs in a plunging metallic silver mini dress and matching silver heels. 

Ashley Aufderheide, 18, wowed in a bright red ruched dress and heels. 

Brian Klugman, 48, looked dapper in a light yellow suit and tie, and brown dress shoes. He was joined by glamorous wife Stephanie Tarling.

Gideon Glick, 35, was handsome in a dark grey metallic suit and black dress shoes. 

Keegan Michael Key donned a grey suit and posed with wife Elisa Pugliese who looked cool in a black and white graphic shirt dress. 

Molly Sims, 50, put on a busty display in a black gown with cut-outs. She was joined by her husband Scott Stuber who was dapper in a black suit.

Keltie Knight wowed in a white blazer and shimmering sheer silver pants. Her ensemble featured a white tulle veil. 

Jane Seymour, 72, thrilled in a black blazer dress with a feather trim.

Michelle Tesoro wore a stylish black dress cinched at the waist with a large black belt.

Matt Bomer, 46, was dashing as ever in a houndstooth pattern jacket worn over a black turtleneck.

Bomer posed alongside Jonathan Bailey, 35, who wore a red shirt underneath a white sweater and pants. 

Steven Spielberg, 76, who co-produced the film, wore a grey sweater vest underneath a sharp grey suit.

Maestro tells the story of the relationship between Leonard and his wife Felicia. It was directed by Bradley from a screenplay he wrote with Josh Singer. 

The flick was produced by Bradley, Martin Scorsese and Steven Spielberg among others.

Bradley said a twist of fate on a plane helped him commit to making his new biopic.

The star recently appeared on The Howard Stern Show to talk about the upcoming movie.

The Academy Award-nominated actor said that at one point during the making of the movie, he was frustrated to the point that he wanted to quit.

Bradley said he was able to refocus after a chance meeting on a plane with a woman who asked about the film, saying she was the goddaughter of the late composer, who died in October of 1990.

He explained: ‘To me, the minute that happened, it was like Lenny saying, ‘No, motherf***er, you’re doing this movie.’

Bradley stars in the titular role opposite Carey, who portrays Bernstein’s wife Felicia, with the movie examining their relationship.

‘Every time I saw a picture of Felicia, I just kept thinking Carey Mulligan,’ Bradley told Howard of the casting process. ‘It was a moment of divine intervention.

‘I was just lucky I was open enough to listen to what this project was telling me to do, which happened a lot on this movie.’

Bradley who previously directed the Oscar-nominated film A Star Is Born, has worked on the musical biopic for six years, researching in detail Bernstein’s life as well as the world of conductors.

‘I spent six years on it because I’m absolutely obsessed with conducting,’ he said.

He opened up on his experience at the helm of an orchestra to conduct Gustav Mahler’s second symphony.

‘The thing that I can almost relate it to was like riding a stallion,’ Bradley said, ‘because it is its own living, breathing organism.

‘So, you have to be the leader of it, and control it, and [be] the captain, but you also have to respect that it’s a powerful organism – which is what an orchestra is – as it’s in front of you.

Bradley told Howard that leading Symphony No. 2 was ‘heavier than Metallica.’

He added, ‘I just felt like it was so powerful. It’s like riding a dragon, basically. It was f***ing crazy.’

The cast of the upcoming movie also includes Matt Bomer, Vincenzo Amato, Greg Hildreth, Michael Urie, Brian Klugman, Nick Blaemire, Mallory Portnoy and Sarah Silverman.

Maestro is set to arrive on Netflix on December 20.