United Kingdom, June 8 -- Sophie Turner had a "mini breakdown" in her 20s.

The 30-year-old actress - who has daughters Willa, five, and three-year-old Delphine with ex-husband Joe Jonas - is still close to the same group of friends she's had since her school days and they are all ready to embrace a new decade in their lives after overcoming turbulent times.

She told the Daily Telegraph newspaper: "All my best friends are my age and we went to school together and we're having a year of 30th birthdays - we're just so happy to be out of the mess of our 20s.

"Each of us has had a mini breakdown but we all feel really positive now. I was very ready to leave that decade of my life behind."

Sophie shot to fame when she was just 13 years old,...