Julia Roberts says life after 30 ''has been bliss''.

The Oscar-winning actress is now 46 and says the last 16 years have been the best of her life, as she doesn't have the hang-ups she had in her 20s.

She explained: ''On my 30th, every person I loved and adored in the world was with me. I was excited and could not understand the tone of doom about leaving my youth behind.

''Since then, my life has been bliss. If I knew that 30 was going to be so much fun I would have done it at 22!''

The 'August: Osage County' star isn't worried about ageing and instead wants to focus on her career, taking on the best roles she can and being a fantastic mother to nine-year-old twins Hazel and Phinnaeus and six-year-old son Henry - her children with her husband Daniel Moder.

Julia told The Sun newspaper: ''Happiness takes on different forms as you get older, smarter, have more friends or get deeper into relationships in life.

''And the least of my worries is age. I work hard at my job and as a mum. I do not count the years. We all get old and that is OK.''