Sex siren Sienna Miller reveals all

SIENNA, 27, made her breakthrough in 2004 gangster flick Layer Cake - but her acting has been overshadowed by romances with Jude Law, Rhys Ifans and married dad-of-four Balthazar Getty. She's now on our screens in the new Hugo Boss perfume ad and action film GI Joe.

Being at the centre of such high-profile romantic scandals must have caused you a few sleepless nights. Lots of women branded you a home wrecker.

I've been at war, without a doubt. I have really experienced the judgment of women in the past year.

How do you feel about your private life being made so public?

I'd love it not to be there but you have to bite the bullet and accept it. When it's invented a lot of the time and hurtful on many levels, I get very self-protective and defensive to people that I love.

Being an open person can't help?

I tend to be very friendly with people. Stupidly, with journalists I'll say, "Do you want a cup of tea? Come into the house." And then they'll write about my appallingly messy sink and how many knickers were on the floor.

So it gets you into trouble.

Well yeah. You say, "Hi, nice to meet you" and the next day you're pregnant with this child. It's like, God if only it was THAT easy. And also I like boys, I like girls, I like grannies, grandpas, kids . . .

Are you talking about your love life?

I'm linked with EVERYONE I meet. Literally EVERY single person. I don't know where I'm supposed to get the time for all this! I have male friends but it doesn't mean . . . y'know. It's so hard.

So how do you react to the stories?

If something is in print it's done, it's there and there's nothing I can change about it. If I find out about what's coming up beforehand, I do my damnedest to stop them writing it. Well my publicist does. But there's no point in reading it.

But you have a reputation for lashing out at the Press and paparazzi.

Yes! Well I feel defensive and I feel like, when people get so hurt. You know if you hear people talking about you behind your back you want to confront them. I think it's inevitable, it's a human instinct.

So what message would you have for the paparazzi and rumour mongers?

Why me? Pick on someone else!

But you are portrayed as a real party girl. Is it true?

Not as much as it's made out. I can handle it. I can drink most grown men under the table and be fine.

What kind of drunk are you?

Not mean. I get a bit louder and giggly.

Describe your personality in one word.

Fearless. It can be destructive I suppose. Well, it's also utter pride and stubbornness. I don't run away from things.

Tell us about your new film GI Joe - it looks like a real blockbuster.

I actually love GI Joe, with things blowing up all around you all the time. I'd never done fight training, let alone been to a gym. So this was a whole new experience.

Did you have to get super fit for the role?

I thought GI Joe was one man called Joe who was a GI but that's not true - it was actually a group of the best fighting people. I'm a baddie called The Baroness so I don't care about them. I had every intention of going and working out, but it just didn't happen. And then one hour of fight training a day was far too much.

What about the costume?

Tight black leather! Plus boots, guns, holsters and MUCH bigger boobs. They gave me these things that look like chicken fillets. The director said, "I'm going to be honest. I like big boobs." And I don't have them so we made them bigger with bras and cutlet things.

Were you offended?

A part of me was like, "Well at least he's honest," but yeah, mildly.

You've shown a lot of flesh on screen. What's it really like doing sex scenes?

It's a little awkward. There's a man with a boom right there and you're having to . . . y'know. Then there's the odd perv in the corner copping a look.

Filming in Los Angeles, were you under pressure to conform to Hollywood's idea of perfection?

Well recently, I found myself thinking, "I'm getting wrinkles. And things are wobbling; I should go to the gym." Then I was like, "F**k it!" Actually, it's not where the focus should be right now.

So are you a regular at the gym?

I don't work out. I do nothing. I do yoga once a year.

And did you like it in LA?

It's very laid back. You've got the beach so you make a pot of coffee, watch the surfers . . . it's quite a nice life.

Tell us about your tattoos. When did you get your first one?

The first one - 18. It was Valentine's Day in New York and I thought it'd be fun. I'd had a few glasses and I was in the East Village. It was supposed to be the outline of a star and the guy coughed and - this is not a joke - it was so awful it was funny. I was like, "It's only there forever don't worry!" - we had to colour it in.

So what made you have more done?

Well you just sort of lose the attachment and if you regret your first, as I do, then the damage is done and you might as well start decorating.

What about the others?

I've got this green . . . you know the Buddhist symbol of Om? God knows why I've got it in green but I did so I've got a stupid green Om and my latest addition, Barry the bird - that's my favourite. There's a poem by Charles Bukowski that I love called Bluebird and Edie Sedgwick drew a bird that was similar and I played her in the film Factory Girl.

Will you get any more? It'd be nice to see you with the A-Listed logo . . .

We'll see what other whims I get!

Are you getting more rebellious the older you get or are you turning into your parents?

Scarily getting closer to it. I love them to death but the nuttiness I see in them starts creeping in, and the over- concern. My mum drives me mad because she loves everyone and everyone has to be OK. And I'm like, "Are you alright? Can I get you water?" She just laughs at me.

The Twenty8Twelve fashion label you run with your sister Savannah has had a great reception. Who do you visualise when you're creating clothes for it?

I think you end up designing clothes you'd want to wear. So I probably design for me.

Did it worry you that you wouldn't be taken seriously as a designer?

I was really nervous because I didn't want to look like I was becoming a brand, or attempting to. You know - launching an album, a fragrance, a God-knows-what.

What's it like working with your sister?

Heaven. We know each other really well. I can't be in the studio every day but I can phone up and say, "I want a little jacket with a little belty thing that does this." I don't know any of the technical terms but she understands exactly what I mean.

Who's the most fashion conscious?

I'd say me but I think both. She's the older sister so was probably the bossy one but we already dress very differently. I did try and copy her when I was younger.

How did you prepare for unveiling your collection at London Fashion Week?

We went through a lot of different phases like, "We can't do it. It's awful!" but then we got to a place where it was like, "Yeah, this is what we want to put out there." It was a lot of hard work but we showed what we're really about.

So what's your everyday style?

Pirate boots, black jeans and an old t-shirt with a cardy. And a nice belt.

Do you find it easy to put together a look?

I always leave it to the last minute. I don't plan - and I don't have a stylist!

GI JOE is on general release from August 7.

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