Sienna Miller says fame made her "aggressive".
The 34-year-old star was constantly in the media spotlight in the 2000s due to her relationship with Jude Law and the famous friends she partied with.
At the time, Sienna was constantly followed by paparazzi which made her angry and determined to outfox them.
In an interview with The Times newspaper, she said: "I was 21 and being irresponsible, as I should have been, but I was really freaked out by that attention and the more aggressive that became, the more aggressive I became in my response. I was like, ‘F**k that! I’m not going to let them get me!’ "
"It does feel like another lifetime ago now."
Sienna broke off her engagement with Jude in 2006 after he admitted he had been having an affair with his children’s nanny.
The ‘Alfie’ co-stars did briefly rekindle their relationship in December 2009 before splitting again in 2011.
The actress then went on to have a relationship with actor Tom Sturridge – with whom she has a three-year-old daughter, Marlowe – but split from him in the summer of 2015.
Sienna has won critical acclaim for her performances in films such as ‘American Sniper’ and ‘Foxcatcher’ in recent years and she insists it is wonderful for her to be recognised for her work rather than her love life now.
She said: "I do feel like it (that period) was damaging … I shook when I was watching the ‘Amy’ film because I remembered what it was like. I was exposed to that level of pursuit. It was that aggressive.
"It went from 0 to 60 in zero seconds. No one copes with that unless you are surrounded by a huge PR team. But I was just an English girl going, ‘What the f*** is going on?’ "
Sienna Miller: Fame made me angry
