United Kingdom, April 12 -- Angelina Jolie's daughter Vivienne was a "really tough assistant" when they worked together on Broadway musical 'The Outsiders'.

The Hollywood actress acted as lead producer on the show and 15-year-old Vivienne indulged her love of theatre by joining the project as a volunteer and Angelina has admitted the teen was her toughest critic.

When asked who is the "biggest theatre head" in the family, Angelina told PEOPLE: "Viv. Definitely Viv ... Hands down. She'll correct me. She'll say, 'Didn't you read the memo? We have to do this, we have to go through this'.

"She's been a really tough assistant. She takes it very, very seriously."

Angelina previously admitted Vivienne - whose dad is actor Brad Pitt - reminds...