Sometimes, fame does scare me. When people know where you are and what you're doing, that can be frightening because I'm such a private person. So I like to try and keep things light-hearted and stay as private as possible.

I'd rather rule the world now than be prime minister.

When I was at school, I auditioned for the school play as Queen Gertrude, and I fell in love with it there and then.

Having a Mary Poppins-themed birthday party when I was 5 - all my friends went in dresses, and I went as a chimney sweep. I was a real tomboy.

'The Five People You Meet in Heaven' by Mitch Albom - I read it in eight hours and blubbed my eyes out when it finished. I've thought about the story every day since.

I love working with Chanel, and long may it reign, to be honest. I hope it lasts forever.

Wear things that make you happy because, I think, that really shines through. If you feel uncomfortable in something, then I don't think it ever really works.

I love high-street fashion. I'm all about Topshop and Zara - even American Apparel. I love T-shirts and vests - simple things you can just live in. American Apparel also does the best bras - they're amazing.

My style is a little more thought out, in a way, but I guess it's eclectic at the same time. I wouldn't be able to describe my style, because it changes on a day-to-day basis, depending on what sort of mood I'm in.

I feel - as I'm edging to my thirties, I feel like a stronger person and a more confident person.

I'm a real bath addict. I could sit in a bath and soak for days on end, and you'll never see me again. It's my easiest, nicest thing. So if you're giving me something extra to do, an extra step to make bathtime last longer, then I'll do it.

Having hibernation weekends where I just sleep for hours on end. Working out when you have those spare moments. All of that is very important.

If I'm in America... I will track down the nearest Soul Cycle, wherever that is, and I'll just power through on a bike for 45 minutes.

When I'm in the U.K., I have a personal trainer who is wonderful, and she's hard-core and makes sure I get up in the morning and go.

I'm actually rubbish at selfies. I always feel a bit ridiculous doing it unless I'm with a bunch of friends, where I'll usually stand at the back with a huge grin on my face!

I love the characters you can build upon when you wear different things. You know, sometimes, I'll want to be girly and wear tulle on a Tuesday, and sometimes I wanna be like Kim Kardashian and wear black leather head-to-toe.

When you grow up, you think everything you own is going to be designer. Not true. Most of the stuff I own is high-street. I love mixing it up; it's so beautifully made nowadays, and the quality is of such a high standard, and let's be honest: everybody loves a bargain.

She is such a doer, Cara - she is so ambitious. She has always known what she wants, and she's a hustler. Sometimes I call her, and I'm like, 'You need to help me hustle,' and she is like, 'Come on!'

Cara, ever since you told me at the age of four that you wanted to be Claudia Schiffer, while you were naked in the bath with a sponge on your head, I knew you were destined for great things.

I like my social media space to be somewhere very positive... I like to just be able to just share any images they see, or a piece of art or an item of clothing, and get to share that with the world.

Coconut oil. I rub it through my hair, all over my skin, all over my body. Natural's the better way to go.

When traveling, I like Urth Caffe in L.A. for eggs Benedict with prosciutto or Balthazar in New York, where I order duck shepherd's pie.

I'm lucky to have a fast metabolism, so I haven't had to exercise much.

I shampoo and condition with Kerastase products but rarely brush it because I'm all about the Kate Moss bed-head look.

A little bit of sun does wonders! With good protection, of course. Vitamin D is just so good for your hair and your nails. I also love coconut water and coconut oil from Whole Foods. It's amazing. You can cook with it, shower with it... you come out of the shower like a slippery seal, but it works.

I'm pretty adventurous - the more wacky, the better! Sometimes I'll want to look chic, but lots of the time, I'll wear really mad colours and patterns, as it's just more fun.

I love make-up so much, but I'm a bit rubbish at skincare; I'm really disloyal and never stick to one thing.

When I was a teenager, I was obsessed with black eyeliner all around the eye, but for someone with my kind of skin tone and hair colour, using brown is actually better than black. I've also learnt from makeup artists how to apply lipstick in the correct way: by starting with the Cupid's bow first and working your way around.

Cara's always been a real tomboy. She was never really that into makeup. She's very quick at it.

My first fragrance as a kid was Tommy Girl. It was amazing. Wasn't it the thing to wear? And then I remember I stopped wearing it because it was literally like the whole classroom was filled with Tommy Girl.

For me, I've always found people who stand up and spritz themselves all over their clothes very odd. I'm a big bath addict, and I get up in the morning, and I have a big bath. But when I get out, and I'm still hot but fresh out of the bath, that's when I apply scent. I just have it on my bare skin; I never apply it to my clothes.

I will never have anything that is remotely technical near my bath time. I completely zone out and stare up at the ceiling. For me, it's like a form of meditation. It's a time where I can just actually turn off.

I'm all about a big lash. I love a good mascara. I use Tom Ford lipsticks. I think he has the most vibrant colours, especially pink or orange or vampish reds, and that's about it.

I wash my face with Creme de la Mer cleansing foam. I love Charlotte Tilbury Magic Cream - it's got SPF15 in it, which I love - and then I'll use a little eye cream by Sisley, which I'm obsessed with. That's what I generally use every day.

I've always worn Superdry. It's a British brand, of course, and it's my go-to festival brand.

My grandmother used to really love fashion, and she always had Chanel No. 5 on her dressing table, and Chanel bags. That's when I really started falling in love with the brand and fashion in general.

Two of my favourite products for a quick-fix are lipstick and mascara. I think with lipstick, brighter is better.

Attack your lashes with the wand. I think there's nothing wrong with doing that.

I'm quite into fitness, and I have a fantastic personal trainer who knows me, knows my body, knows when to push me, and knows when not to push me. She doesn't make me do 20 burpees in a row and instead focuses on strengthening my core, telling me we need to focus on making me into 'a tall giraffe'!

Big Anya bag - perfect for stuffing papers in for the plane; Ray Bans - in any shape, I'm hooked!

Topshop is the best. I don't know how I'd live without it. Most of my clothes are from there.

One trend I always go for is nautical: stripes, navy, rope knot belts, gold buckles.

I only travel with one suitcase - Mulberry does an incredible one. I always check it; the TSA restrictions are so tricky.

As soon as I get on the plane, I go straight to the bathroom and give myself a little minifacial. MV Organic Skincare does a rose oil spray that is absolutely gorgeous and amazing.

When it comes to work, I'm not competitive at all. Having Cara as my baby, I had to learn quite quickly that I couldn't be competitive because I had a sister who meant more to me. And I knew she was going to be brilliant, so I had to become very aware of not comparing.

I don't understand women who don't encourage each other. I think compliments and showing affection are really important, too. Women don't do that enough, and it's so essential because even if you're shy about giving a compliment, it's good energy; it's uplifting.

The whole working-in-an-office thing was a dream for me - I never get to do it! I'm secretly very organised and obsessed with stationery, especially staplers and post-its, which I know is a little weird.

All I ever wanted was to be a sexy bride, and actually, I think I've turned into a romantic bride.

One of my favourite scents in the world is the 'Brown' candle from Hotel Costes in Paris. It smells like naughty nights in corners of clubs.

I always pack lots of loose linen shirts and denim cut offs, Converse, vintage Reformation sun dresses, gold jewellery, and statement shades. Plus a trunk full of swimwear, of course.