IMAGES: Miranda goes topless 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 is sizzling on a new magazine cover using old props? Which popstar is flaunting her abs in an advertising campaign?

Here's the lowdown on the latest fashion news!

Topless Miranda Kerr dons lacy knickers for new lingerie campaign

Miranda Kerr, who may not have made it to Tuesday's Met Ball, is grabbing headlines thanks to a sexy Victoria's Secret shoot.

The 29-year-old model looked stunning in the campaign picture, and not just because she's very nearly naked, but because she could make anything look chic, the Mirror reported.

Granted, for a lingerie campaign, Orlando Bloom's wife is not actually wearing all that much lingerie, she's mainly just rocking a skimpy pair of lace knickers and a charm bracelet.

Kim Kardashian, who has the highest number of Instagram followers, went on a tweeting rampage on Friday and shared an old photo of herself on Instagram wearing only lingerie.

In the photo, the 31-year-old socialite kneels on a white chair wearing black bondage-inspired lingerie with black knee-high boots and has long, blonde hair, Us Magazine reported.

The TV reality star seemed to credit her hot bod to being on a gluten-free diet as she captioned the image "Gluten free is the way to be...Oh Hi."

She last had blonde hair in August 2010 and has since tweeted new photos of herself proving she still has dark locks. In one close-up shot, she wrote, "I'm bored...Oh hi!"

Katy Perry showed off her impressive abs in a sexy new photoshoot for Adidas.

The 27-year-old singer is the face of this season's Adidas campaign and posed for the shoot in an old dance studio with some hot dancer types, the Mirror reported.

Perry achieved the impossible by making a tracksuit look sexy as hell -- a bright pink one at that -- by bending into all sorts of aesthetically pleasing shapes on the dance floor.

The Firework hitmaker is just one of the celebs fronting the new Adidas campaign, with David Beckham also signing up to do a bit of posing.

The sportswear has been designed by Stella McCartney as part of her line for the 2012 Olympics.

Kate Moss, who has been described as a Versace-clad Olympic goddess for Vogue's jubilee/sporting issue, imspires a slight sense of deja-vu with the rope she's clutching while posing.

A couple of years ago, David Beckham and his wife Victoria had first dibs on the said prop, the Telegraph reported.

The genetically-blessed duo were captured writhing around on the large rope for the Emporio Armani campaign they fronted in 2009, while footballer Beckham went solo with it for one shot, handling it in exactly the same way as the 38-year-old model.

Photography duo Mert Alas and Marcus Piggott photographed the Beckhams for the campaign and most recently Kate for her new Vogue cover.

The secret to Rihanna's fabulous figure has been revealed by her personal trainer Ary Nunez.

Nunez disclosed that the pop star does just 25 minutes of exercise a day -- but splits it into five strenuous five-minute stints.

"We train when she's ready. Even if we're on the road and it's 2 am," the Daily Star quoted Nunez as saying.

The 24-year-old singer is so dedicated to honing her size eight body that she works out five times a day. The star even calls one of her trainers in the middle of the night for a high-energy session.

The results were for the world to see when she turned up at London Fashion Week flaunting her perfect curves in a green silk dress slit to the thigh.

She also impressed her fans on Twitter by posting a series of snaps of herself in a bikini.

Rihanna's other personal trainer Harley Pasternak, who put the star on her "five-a-day" five-minute stints, said: "It's easy for her to fit around her busy schedule and even her holidays."

Rihanna is also on a strict diet, which limits her to five small meals, and snacks a day to keep her energy levels sky-high.

Cameron Diaz has revealed that her butt is looking better now and the shape gets "better" as she grows "older".

"My ass is definitely higher than it was when I was 20," the New York Post quoted the 39-year-old actress as telling Access Hollywood.

"This is the thing that people don't understand -- take care of your body (and it will) get better! It gets better as I get older. Absolutely," she added.

Diaz will celebrate her 40th birthday on August 30. But the actress swears that she is not dreading the milestone.

Diaz showed off her figure on vacation this winter.

"I love getting older. Look, the alternative to getting older is dead, so...I feel very fortunate to have a very full, loving, blessed life, so, I'm living it to the fullest."

"As I get older, I become happier -- because I'm wiser, I know myself better, I connect to people better. I think that in our society we don't honour older generations enough, because we think of it as being bad, because the appearance changes. I say embrace it. I'm better in every way because of it," she added.

Naomi Campbell is advertising for a personal assistant and she is specifically looking for applicants with "very thick skin".

Many of the supermodel's ex-employees have been battered, abused -- and won huge payouts after taking her to court.

The catwalk queen, 41 -- notorious for her tantrums -- was convicted of assaulting one flunky with her mobile phone.

An ad on the website entertainmentcareers.net, where Hollywood stars recruit staff, says a New York-based supermodel is seeking a "full time personal assistant with very thick skin," the Sun reported.

Fashion insiders are convinced it was placed by London-born Campbell, who now lives mostly in the Big Apple.

Brave jobseekers are warned: "You will need to be on call 24/7."

Megan Fox, who has been chosen as the new face of Sharper Image, stripped down to her underwear for the electronics company's ad.

The 25-year-old actress, who is rumoured to be expecting her first child with husband Brian Austin Green, dons a white dress shirt, black underwear and sheer thigh-high stockings as she seductively lies across an undone bed while playing on a gadget, the New York Daily News reported.

Fans who can't get enough of the Transformers star, who will appear in Judd Apatow's upcoming This is 40, will have to wait until later this year when Sharper Image launches the official campaign.

In conjunction with the launch, Sharper Image will also introduce a newly designed website, www.sharperimage.com

Emma Stone, who turned heads on the red carpet in a gorgeous Lanvin frock at New York's Met Gala on Tuesday, suffered a fashion disaster after she discovered a hole in her couture dress as she headed to an after-party.

The 23-year-old actress was joined by Lanvin designer Alber Elbaz, who looked on with horror at the rip in her expensive creation.

The Amazing Spider-Man star was forced to cover up the tear, just below the zip fastening, with a patent maroon coat as she arrived at a bar to carry on festivities, the Daily Mail reported.

She donned satin black pumps from the Hiver 2011 Runway Collection and painted her nails turquoise to complete her look, along with an intricate up do featuring a large hair brooch.

The red-head was attending a the after-party for the Schiaparelli and Prada: Impossible Conversations Costume Institute Gala at The Metropolitan Museum of Art in New York City.

Her boyfriend Andrew Garfield, who plays the protagonist in her upcoming movie, was nowhere to be seen as she handled the fashion drama.

Emma should have seen the malfunction happen as she was spotted fussing around with her clothing earlier on the main venue steps.

Actresses Rashida Jones and Leslie Mann were helping her stay in her intricate frock, but their efforts turned out to be in vain.

Beyonce, who has come a long way since first trying makeup when she was six years old, has revealed that she often does her own makeup for appearances but her love for the basics remains.

"I was playing in my mother's makeup," People Magazine quoted her as saying. "I had blue eye shadow and red lips, and I put crazy blush on. I looked like a clown, but I thought I was so beautiful.".

Growing up around her mom Tina Knowles's salon, Beyonce learned a lot about beauty.

"I like to experiment with my hair. I love playing around with highlights or bleaching the tips. I can cut and style my own hair," she said.

In fact, she recently gave herself a trim, cutting two inches off her ends.

"I just parted it in the middle and chh-chh-chh," she said.

But it's inner beauty that she values most and she hopes her daughter will learn to do the same.

"My biggest thing is to teach Blue not to focus on the aesthetic. It's really about who you are, and the human being, that makes you beautiful," she said.

Asked what she wears to look awake after sleepless nights spent with baby Blue, she replies, "Lip gloss -- I love L'Oreal's Infallible 8 HR Le Gloss in Coral Sands -- and a little bit of blush."

She was then asked if she's comfortable leaving the house without makeup.

"Every day in my life is a part of my history, and I've worked really hard on my career and my life. So I make sure I wouldn't be upset if somebody saw me. I don't have to spend that much time on my skin. I'm pretty good at throwing out the expired stuff, but I hold on to my mascara for a long time. I actually prefer old mascara. It makes your lashes thicker and longer," she said.

However, regardless of who's seeing her and where, the star is feels better than ever.

"I have embraced my flaws. And I feel more confident," she added.

Jennifer Love Hewitt has revealed that she has been having nightmares about her breasts decreasing in size.

The Client List star, who wears a size 36-C bra, has been showing off her assets to promote her new show, in which she plays a massage therapist who gives clients happy endings.

"I actually had a nightmare the other night that people were trying to deflate my boobs while I was working," Contactmusic quoted her as saying on E!'s Chelsea Lately show.

"They had tubes and I was trying to work, but they kept getting smaller. I was like, 'Guys, don't take them away!' I'm getting issues about it, I think," she said.

The 33-year-old actress also joked about the recent controversy surround the size of her cleavage. Her chest was reduced in selected advertising campaigns for the show.

"Some random person decided they were supposed to be smaller. I still don't know who that person is."

"Right now I'm rubbing guys for a living, so I'm fine. I have my own Fifty Shades of Grey happening every day, so I'm good," she added.

Victoria's Secret model Alessandra Ambrosio has given birth to baby boy in Florianopolis, Brazil, according to widespread reports on social networking sites.

The 31-year-old and Californian businessman fiance Jamie Mazur already have a three-year-old daughter Anja, who was also born in the same city.

Ambrosio's mother-in-law Michelle Mazur wrote on her Facebook page on Monday, "Grandson just born in Brazil!"

Love Magazine, which has frequently worked with the model, tweeted: "Congratulations to Alessandra Ambrosio who had a baby boy today."

Just hours ahead of the birth, Ambrosio had posted an Instagram photograph of a Brazilian beach, where she has been spending the last few weeks of her pregnancy.

"Beautiful day!!!! Exciting week ahead!!!" the Daily Mail quoted her as tweeting.

On Sunday, Ambrosio posted a selection of photos from her baby shower the previous day, including one of her large belly covered in paint.

"So much fun at my little boy baby shower!! Now just have to wait for him to arrive!!!" she tweeted.

Ambrosio and Mazur had revealed that they were expecting a sibling for Anja last December, just weeks after she walked the catwalk for the Victoria's Secret show.

She is determined to be back to her 34-25-34 size in time for the launch of the Victoria's Secret store in London in July.

The editors of 19 international editions of fashion magazine Vogue have made a pact to stop using models under the age of 16, or those who appear to have an eating disorder.

The fashion magazine hopes to promote healthy body image through its new agreement.

According to the New York Times, Conde Nast International chairman Jonathan Newhouse said in an announcement Thursday, "Vogue editors around the world want the magazines to reflect their commitment to the health of the models that appear on the pages and the well-being of their readers," CBS reported.

The announcement, which came via a press release from Conde Nast International, was broken down into six points:

1. We will not knowingly work with models under the age of 16 or who appear to have an eating disorder. We will work with models who, in our view, are healthy and help to promote a healthy body image.

2. We will ask agents not to knowingly send us underage girls and casting directors to check IDs when casting shoots, shows and campaigns.

3. We will help to structure mentoring programs where more mature models are able to give advice and guidance to younger girls, and we will help to raise industry-wide awareness through education, as has been integral to the Council of Fashion Designers of America Health Initiative.

4. We will encourage producers to create healthy backstage working conditions, including healthy food options and a respect for privacy. We will encourage casting agents not to keep models unreasonably late.

5. We encourage designers to consider the consequences of unrealistically small sample sizes of their clothing, which limits the range of women who can be photographed in their clothes, and encourages the use of extremely thin models.

6. We will be ambassadors for the message of healthy body image.

According to New York Magazine, all the international editions will kick start the effort in their June issues with special editorials dedicated to the initiative.