Julia Roberts is ''really proud'' of herself for being a working mother.

The 'Normal Heart' star, who has nine-year-old twins, Hazel and Phinneaus, and seven-year-old son Henry with husband DANNY MODER, tries to spend as much time as possible with her family and admits she still found it ''very difficult'' to leave them to work on 'August: Osage County' last year.

She said: ''It was a decision that was very difficult to make.''

The actress usually only works on one film per year so she can be a hands-on mother.

But she said: ''I'm really proud of what I've accomplished in my career. By [the time I had children] I felt I had really earned staying home with my kids and being with my family.''

Asked if her children realise that she is famous, the 46-year-old star also told the 'TODAY' show: ''I think they have a firm understanding that they are children of parents in show business.

''When 'Mirror Mirror' came out, all of the kids in their class saw it and I wouldn't let them see it. So they felt that they were being penalised for being my children.''

But her children do get to enjoy some perks of her fame, as she plans to let them use her Best Actress Oscar statue, which she won for her performance in 'Erin Brockovich' in 2001, to play with their Barbie dolls when she eventually brings it home.

She said: ''The Oscar is still in my sister's apartment... I'm gonna go get it and take it home. It can be Ken's competition for Barbie's affection.''