Sienna Miller's 20s were a riot of parties (you remember, you've seen the pictures) – her It-girl status meant the highs and lows of her personal life were splashed across the tabloids and, unsurprisingly, it didn't spell happiness.

In a new interview for Australian ELLE, Sienna has revealed that it's only now, aged 33, that she feels 'much more grounded and complete'. Family life – with her fiancé, Tom Sturridge, and two-year-old daughter Marlowe – suits her.

What's more, her career achievements are now in focus – this year she has roles in the Oscar-nominated films Foxcatcher and American Sniper.

In her own words…

'Your 20s are a time for exploration and you kind of stumble and trip and pick yourself back up and all those experiences align to make you who you are. I think it’s really important to have ups and downs and make mistakes. God knows I’ve made my fair share – but it all comes together. I’m happy with me.’

‘For a long time, the focus wasn’t on my work, it was very much elsewhere… I was really naïve, I think. I was a young 21 [in 2003, as Jude Law’s new girlfriend]. Not totally green – I was by no means innocent – but I had faith in the goodness of everyone. And that led me into all sorts of situations that backfired.’