Eva shows off her curves and more fashion news!

Welcome to the weekly fashion round-up, where we bring you the latest on supermodels, style, designers and everything in-between!

Which supermodel isn't afraid of hitting 50? Which Hollywood star nearly had a wardrobe malfunction in her plunging gown?

Here's the lowdown on the latest fashion news!

Eva Mendes shows off hourglass curves on mag cover

Eva Mendes looks smoking hot on the cover of the UK's Marie Claire Magazine.

In one shot, Mendes reclines on stairs in a strapless swimsuit, with her endless legs clad in fishnet stockings, the Mirror reported.

In another shot the Hitch star is seen sporting leopard-print trousers with an unzipped top to reveal her white bra. Her bouncy, tousled hair tumbles across her face.

Mendes, who is dating fellow actor Ryan Gosling, coyly admits to wanting a family of her own, saying: "I am superstitious," she said.

"I don't like talking about things that I want in the future because I feel by verbalising such things, they won't come true," she added.

Kim Kardashian has revealed that she wants to be 'skinny for a day' and have the body of a supermodel.

The Keeping Up With The Kardashians star has learnt to 'accept' her curvaceous figure, but she still wishes she was thinner and wants to have a supermodel's figure.

"If I could have anyone's body, I'd love to be a supermodel. I'd love to be skinny for the day," Contactmusic quoted her as saying.

"It's a process. You have to learn to accept it. You have to learn to like what you see in the mirror, but there are definitely times when I don't. I'm built a certain way and you just can't change that," she said.

The 31-year-old star, who is in a relationship with Kanye West, is 'not always confident' about showing off her body, and despite working out at the gym on a regular basis, she has particular hang-ups about her thighs.

"In Hollywood, people are used to stick-skinny women, and that's never going to be me."

"Growing up, I'd look at those skinny models and feel like I looked different. I'm not always confident. I have hang-ups like everyone else -- I've never been a big fan of my thighs."

"I work hard at the gym to look like this. It's not easy and I have to work at it every day of the year, and watch what I eat," she added.

Katie Price, who launched her new 'Katie's Boutique' lingerie range in conjunction with UK chain Store Twenty One in London on Tuesday, said that a lot can be revealed about girls by their underwears.

The 34-year-old model emphasised the need for girls to wear bright matching underwear.

"I think it's important for girls to have matching underwear, I've always said that anyway. And colourful and clean. I can't stand it when people wear white bras and they've had it for so long it goes that dirty colour," the Mirror quoted her as saying.

"But you know, fresh, bright -- I love bright colours. I ALWAYS wear matching underwear . In fact, when I did 'Signed By Katie' and we said to the girls 'we want you to come in your underwear', I couldn't believe how many girls don't wear matching underwear and it just put me straight off."

"I think it says a lot about a girl by their underwear," she added.

Kylie Minogue has challenged the Duchess of Cambridge's younger sister Pippa Middleton to a sizzling battle of the buns at the Queen's Diamond Jubilee.

The 44-year-old Aussie pop star, who famously flaunted her shapely rear in tiny gold hotpants, will be singing at the concert celebrating the Queen's 60 years on the throne on Monday.

Also on the guest list is Middleton, 28, whose pert behind stole headlines when she was bridesmaid at sister Kate's wedding to Prince William last April.

Kylie called for the challenge, when she was asked by TV chat host Alan Carr whether she would have a "bum-off" with young pretender Pippa.

"I'm going to have to. I'll definitely have to (bend over and) pick something up off the ground," the Sun quoted her as saying.

Minogue, wearing a hot pink mini-dress, then leaned over and gave a wink to show the Channel 4 audience she is still in excellent shape.

And to help in her battle with Pippa, joker Carr, 35, even gave her a vibrating bottom-toning machine as a gift for her birthday, which fell last Monday.

While she is prepared to tackle the bum challenge, the singer admitted she is nervous about singing in front of the Royal Family.

"I can't tell you too much about the performance, but what I can say is I'm doing a medley," she said.

Rihanna shows off her sultry side as she bares all in a hotly anticipated spread for Britain's Esquire Magazine.

Protecting her modesty by wrapping one arm around her chest, the singer wears just a pair of jeans and a fez hat in the shots, taken by Melissa Forde.

They were clicked when the singer was in the UK in February.

In another shot, Rihanna wears a sexy bondage-style all-in-one, flicking her blonde hair as she shows off her curves.

And it seems as though the We Found Love singer had a good time on the east London set of the shoot, as she is seen giggling and laughing while wrapped up in a patterned top in between takes.

The stunning photographs of Rihanna, taken for the upcoming July edition of the magazine, come as the singer has been linked to New York Knicks star J R Smith, after the pair were apparently spotting kissing at Veranda nightclub in New York earlier this month.

"They were very flirty in the club all night and holding hands. She was sitting on his lap and was really into him," the Daily Mail quoted a source as telling In Touch Weekly Magazine.

The sportsman is a controversial figure, as in March he was fined 25,000 dollars by the National Basketball Association NBA) after tweeting a photo wearing just a thong in his bed.

"He is the team's most controversial player, so it's no wonder that Rihanna likes him," the source added.

Rihanna has also revealed her desire to borrow her Battleship co-star Brooklyn Decker's breasts.

Twenty five-year-old Brooklyn also disclosed that both of them were in awe of each other's bodies and would love to swap them for a day to see how it felt.

"We are envious of each other's bodies," Us Magazine quoted her as saying.

"We decided that I'm going to borrow her butt for a day -- and she's going to borrow my breasts," she said.

The wife of tennis star Andy Roddick also added that she hated showing off her body, despite having flaunted her assets in a tiny bikini on the cover of Sports Illustrated's 2010 Swimsuit Issue.

"Because I'm such a tomboy, I hate showing off my body," the supermodel-turned-actress told FabSugar at an event last month.

"(My stylist) is always like 'you have to show your figure'," Brooklyn added.

Pop princess Jessie J wants to change her trademark style because she thinks it makes her look like a drag queen.

"I started to look like a cartoon character with the fringe and the catsuits," the Daily Express quoted the 24-year-old singer as saying.

"I ended up looking like a transvestite. I want to change my hair, change my style. I want to be allowed to grow," she added.

Kristen Stewart, who had to strip off on the first day of filming On The Road certainly doesn't seem to have any problem flashing a little too much flesh these days.

The 22-year-old actress stepped out onto the red carpet in a dramatic dress with a very plunging neckline, the Daily Mail reported.

The Twilight star had opted for a fiery red hue which certainly made an impact as she arrived at the premiere of Cosmopolis.

But Stewart very nearly suffered a wardrobe malfunction as the dress gaped around the neckline extremely, nearly showed off her entire breast.

Her dress not only dipped down to her navel, but the back also had slashes of lace panelling, which made for an extremely seductive look.

The actress finished off the elegant outfit with bright lips that matched the shade of her frock.

While she was at the event to support her boyfriend Robert Pattinson, who is the star of the film, she kept her distance from her beau.

The 26-year-old British star was busy posing up with his co-stars ahead of the screening of the film.

Instead Kristen took to the carpet with her own On The Road co-star Tom Sturridge and the pair were seen looking very friendly, sharing a warm hug as photographers snapped away.

Taylor Momsen has stripped for a raunchy men's magazine shoot.

The former Gossip Girl star wears a see-through black vest, underwear and thigh high socks for the cover of the Czech Republic's FHM, but she takes off her clothes for the inside pages of the publication.

Momsen poses in a pair of panties, hold-ups and leather ankle boots for one topless shot, with just her curly blonde hair preserving her modesty, the Daily Star reported.

The other image shows the 18-year-old staring seductively at the camera while cupping her breast underneath a cropped tee-shirt.

The teenager is also seen crawling across a washing machine in floral underwear, and she tops off the collection of saucy snaps by cuddling up to a topless female model.

Charlize Theron has revealed that though she is aging, she "can't foresee" herself getting plastic surgery.

"I look in the mirror and my face is changing," People Magazine quoted her as telling Interview.

"I have a different relationship all of a sudden with myself. Your face changes, things change -- that's just kind of what happens," she said.

However, the Snow White and the Huntsman star does accept her fate.

"There are days when I definitely look in the mirror and go, 'All right, I need to find a cream,'" she reveals. "Being a major Hollywood star changes the game," she said.

"It's hard in this industry, because I think so much importance is put on how you look."

"I'm not brave enough to be like, 'You know what? I'm just going to let it happen. Whatever. I'm so cool with every line on my face'," she added.

Theron admitted that she wouldn't go under the knife.

"I can't foresee myself ever going under the knife, but then again, I'm only in my mid-thirties," she said.

"Maybe it's different when you're in your mid-sixties. So I don't want to make statements about where I'm gonna be in 30 years," she said.

Much of Theron's acceptance has to do with her mother, who "really instilled in me that my moral compass and achievements all had to come from a real place that had nothing to do with my beauty or how I looked," she said.

But still, "I definitely have a different relationship with the way I look. It's not all-consuming. But I'm also human," she added.

Elle Macpherson has revealed that she is not bothered about turning 50 because she is embracing her prospects for the future.

The 48-year-old supermodel, once nickname 'The Body' by Time Magazine, likes the idea of flowing on with life.

"I don't believe that youth equals beauty or beauty equals youth. How I feel, how well I am is more important to me," Contactmusic quoted her as saying.

"It doesn't bother me becoming 50 at all; the alternative is death, so that is not an option. I rather like the idea of flowing on with life. I have had amazing life experiences and hopefully another 50 years of experiences ahead of me," she said.

Macpherson -- who has 30 years of modelling experience -- is set to host another series of Britain and Ireland's Next Top Model and she also recently renewed her modelling contract with cosmetics company Revlon, which makes her feel that the attitude of brands toward older people is changing.

"That tells me this is not an ageist society, and Revlon is a modern company," she said.

Macpherson also admitted that she is currently 'loved up' with her life and family, which includes sons Flynn, 14, and Cy, nine, with former partner Arpad Busson.

"Love is where it's at for me. Love for my children, for my partner, for my friends, for the great outdoors, for health and wellness, for the work I do and family. So yes, in my life today I am definitely loved up," she added.