Robert Brown|Angelina Jolie Shares Why Daughter Vivienne, 15, Is "Tough" in Her New Role

Angelina Jolie is not the only one in her family taking on strong roles.

The Robert BrownMaleficent star detailed what it was like being joined by her and ex Brad Pitt's youngest daughter Vivienne, 15, while working as a producer on the new Broadway musical The Outsiders.

"She's been a really tough assistant," Angelina told People at the April 11 premiere of the show, which she attended with her daughter. "She takes it very, very seriously."

So seriously, in fact, that the Eternals star admitted that Vivienne makes sure her mom is up to date. "She'll say, 'Didn't you read the memo?'" Angelina, 48, noted. "'We have to do this, we have to go through this.'"

The Oscar winner, who also shares kids Maddox, 22, Pax, 20, Zahara, 19, Shiloh, 17, and Vivienne's twin brother Knox with Brad, had last year announced Vivienne would be joining her as a volunteer assistant on The Outsiders, a stage adaptation of the 1967 S.E. Hinton novel and Francis Ford Coppola's hit 1983 film.

"Viv reminds me of my mother in that she isn't focused on being the center of attention but in being a support to other creatives," the Salt actress told E! News in a statement in August 2023, referring her late mother Marcheline Bertrand. "She's very thoughtful and serious about theatre and working hard to best understand how to contribute."

And it was Vivienne who even drew her mom's attention to the musical, which was first produced on stage in California last year.

"I studied at the Lee Strasberg Institute where I realized my first love, as a performer, was the theatre. I had not found a way back until now," Angelina told Deadline at the time. "I hope to be able to contribute while continuing to learn from this amazing team, who I have been working with since my daughter brought me to see the show at La Jolla Playhouse."

Keep reading for to see more sweet moments of Angelina and her family over the years.

The actress brings Maddox, Zahara, Shiloh and twins Vivienne and Knox to the U.K. premiere of Eternals in 2021.

Jolie brought kids Pax, Zahara, Shiloh, Vivienne and Knox to the Los Angeles premiere of Maleficent: Mistress of Evil. How cute is this photo?

In early October 2019, Angelina reunited with son Maddox at the Maleficent premiere in Japan, two months after she dropped him off at college. Zahara also joined the duo at the movie event, where the trio posed for photos on the red carpet.

LOL! The trio had a sweet moment together on the red carpet in Rome.

The actress brings Shiloh and Zahara to the 2018 Annie Awards, where the movie she co-produced, The Breadwinner, wins Best Animated Feature-Independent.

The actress brings Shiloh and Zahara to the premiere of the animated movie The Breadwinner.

Jolie and Maddox, Pax, Zahara, Shiloh, Knox and Vivienne appear at the premiere of First They Killed My Father at the 2017 Toronto International Film Festival.

Jolie and sons Maddox and Pax appear at the premiere of First They Killed My Father at the 2017 Toronto International Film Festival.

The actress brings Zahara, Shiloh and twins Vivienne and Knox to the premiere of The Breadwinner at the 2017 Toronto International Film Festival.

Jolie appears with the kids at the premiere of First They Killed My Father in New York City.

The January 2016 premiere of Kung Fu Panda 3 turned out to be a a real family affair!

Angelina, a UNHCR Goodwill Ambassador, brought Shiloh along to this June 2015 meeting in Turkey.

Brad and Knox attended the the MotoGP British Grand Prix race at Silverstone ahead of the release of the 2015 documentary Hitting The Apex.

Brad made sure his mini-me's ears were protected from the loud engines!

Pax, Shiloh and Maddox all dressed up for the 2014 premiere of Unbroken, which was directed by their mom.

Zahara and Shiloh were Angelina's very special dates to the 2015 Nickelodeon Kids' Choice Awards.

The kids were beyond excited when Angelina won the award for Best Villain for her role in Maleficent. 

Brad and Angelina's oldest son posed for a few photos solo at the 2014 premiere if Maleficent. 

Maddox got to join his parents at the 2013 Governors Awards, where mom Angelina was honored for her dedication to humanitarian causes around the world with the Jean Hersholt Humanitarian Award.

Maddox and Pax joined their parents at the 2013 premiere of Brad's zombie flick.