Rihanna in lingerie 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 glamour model suffered a wardrobe malfunction? Which supermodel uses a mobile app to keep her rear pert?

Here's the lowdown on the latest fashion news!

Barbadian singer Rihanna has been pictured in a variety of lacy bras and panties as she poses seductively in the back of a vintage car to front the new Emporio Armani lingerie campaign.

Rihanna, 23, is seen showing plenty of cleavage, slipping into a black and white skimpy lingerie set for the steamy shoot, the Daily Mail reported.

The Umbrella singer showed off some of her tattoos, including the Sanskrit lettering she has on the right side of her thigh and hip, as she posed in a cream-coloured underwear set.

In another the Arabic lettering she has on the left side of her left ribcage is seen as she laid back on top of the car in her bra, but with a pair of skintight jeans and a leather jacket on.

In more clothed shots, the singer is seen in skin-tight lyrca trousers with chunky leather boots while posing in front of a car with a moody expression.

Steven Klein, who is well known for his W Magazine editorials with Madonna, Brad Pitt and various other famous faces, took Rihanna's photos.

She was announced as the global new face of Emporio Armani Underwear and Armani Jeans back in July.

Kim Kardashian was pictured wearing six swimsuits within just three days of her mini honeymoon trip to Italy.

The 30-year-old socialite, who had just two whole days on Italy's Amalfi coast with her husband Kris Humphries, managed to change her outfits an overwhelming number of times as compared to the NBA star, who was happy to be seen in the same dark board shorts over and over again, the Daily Mail reported.

With her hair and makeup perfectly done, Kardashian was seen in a number of skimpy bikinis, flaunting her fuller figure.

The Keeping Up With The Kardashians star wore the same simple triangle bikini with gold accents in two different colours -- black and maroon and a particularly striking black and gold bikini, which Humphries seemed unable to take his eyes off.

She was also seen wearing a purple-hued version of a snakeskin print bikini, a silver number with a metallic top and snakeskin bottom and a specially personalised bikini with her new surname 'Mrs Humphries' showcased on the bottom.

In more Kardashian news, Kim has revealed that she felt like Cleopatra as she stepped out of her New York apartment wearing a one-shouldered petrol blue Vera Wang gown, red lipstick and Loren jewels.

Wearing her long dark hair coiled in a chic plaited do, and grey and black platform heels, she tweeted about her attire.

"Rockin' Vera Wang & Loren jewels and red lips! Feeling like Cleopatra today!" the Daily Mail quoted her as writing.

The reality TV star wore the stunning ensemble to the Vera Wang 2012 spring collection show at the New York Fashion Week.

Lingerie model Abbey Crouch and television presenter Tess Daly have revealed the secret to their pert behinds, and they say it is all due to a free mobile phone app.

Pilates instructor Doug Robertson came up with the app, called 'Get The Perfect Bum', and it demonstrates toning and firming exercises, and is available exclusively for the iPhone, iPad and iTouch.

Abbey, 25, said she has been following the techniques shown in the videos since giving birth to her daughter, Sophia in March.

"I watch A Perfect Bum With Doug Robertson religiously. After I've fed Sophia, me and my mum work out to it in the kitchen. I do feel fab," the Daily Mail quoted her as saying.

Mother-of-two Daly, 42, has also revealed she followed the videos to get into shape for the summer.

"It concentrates on toning bottoms and the tops of thighs. It was perfect preparation for summer's shorter skirts," she said of the app on her blog.

For anyone keen to follow the fitness regime, the first two videos of the 'Get the Perfect Bum' app are free to download.

An additional ten videos are then available at a cost of 69p each or 2.99 pounds for the complete set.

Personal trainer Doug recommends the app to anyone who currently makes the excuse that they don't have time to exercise.

"The Perfect Bum App is a great way to fit exercise and toning into a busy life. With the app, you can take the exercises with you wherever you go, and fit your activity around your life," he added.

Gwyneth Paltrow has revealed that she will always cherish the memories of getting her first Coach bag.

Paltrow, who is a huge fan of the luxury leather goods brand, is its latest face after she replaced Kate Bosworth.

"I've always really liked the brand, it's a very New York brand and I'm a very New York girl, it's a brand where, I think when you were younger you remember your first Coach bag," Contactmusic quoted her as saying.

Coach's president and executive creative director Reed Krakoff praised Paltrow as "a natural choice" for the label on its 70th anniversary.

"She embodies the spirit, energy and elegance of the Coach brand," he said.

Rapper Ice-T's buxom wife Coco Austin faced a wardrobe malfunction as she modelled a Richie Rich outfit for New York Fashion Week and her right breast was exposed.

Austin, 32, who took to the catwalk for a Poplex Fashion Show at nightclub Lavo, was wearing a strapless minidress, which failed to contain her assets, and left her exposed to the audience.

Among the audience was Kim Kardashian's husband Kris Humphries, who was sitting in the front row along with Coco's husband Ice-T and actress Kirstie Alley.

According to website Celebuzz, after the show, Coco explained the malfunction, revealing that she didn't have a proper fitting beforehand and realised the dress was too short just ten minutes before she hit the catwalk.

"The fabric was so slippery. I knew there was going to be a malfunction! Oh well. That's life. What are you going to do?" the Daily Telegraph quoted her as saying.

The good-humoured reality star even took to Twitter to make light of the incident.

"Today is 'T**** Tease-day' Haha instead of Tuesday,get it? At home I'm somewhat of an nudist It feels good to be free," she wrote.

Model and actress Elisabetta Canalis, has bared all in a new PETA magazine ad.

The Italian stunner who split from movie stud George Clooney earlier this summer, previewed her I'd Rather Go Naked Than Wear Fur autumn campaign for PETA on the streets of Rodeo Drive.

She is the first Italian to pose naked in the iconic campaign. The PETA Magazine has earlier featured other animal-loving stars like Pamela Anderson, Charlize Theron and Eva Mendes.

Canalis -- in her birthday suit -- will soon be seen on billboards all over Milan, urging fashion lovers not to use fur products.

"Don't buy fur. Even a little trim (on) your gloves or your bag or your jackets...You must remember that animals don't have a voice; you must be their voice. Never be afraid to speak up," Contactmusic quoted her as saying.

Christina Hendricks stole the spotlight from Sarah Jessica Parker at the premiere of her latest flick by wearing a revealing low-neck dress.

According to the Sun, the 36-year-old actress wore a revealing Vivienne Westwood red satin dress at the premiere of I Don't Know How She Does It in New York.

While Parker chose to wear a simple black dress, Hendricks' dress revealed her curves and left men ogling at her breasts, despite the actress herself being against such "infantile" men.

"It's a little infantile. Men who constantly stare at our breasts are never the men we're attracted to," the Mirror quoted her as saying.

Lady Gaga had to be carried by her bodyguard from her car to a photoshoot as she struggled to walk with her unpractical stilt-style heels.

After a day of modelling for a Vanity Fair Magazine photoshoot by famous photographer Annie Leibowitz in New York, the bodyguard carried the popstar to the last set for the rest of the shoot, the Daily Mail reported.

But the singer still managed to bring the glamour as she was carried from a car in Manhattan's Meatpacking District.

And she had to be lifted up throughout the day as she walked around the sets in the block heels.

She even fell once, settling next to a hotdog stand.

Lady Gaga was also pictured going commando while posing for photographers in a front-slit dress on a New York street.

She was seen in all-red attire, accessorised with crazy sunglasses, gloves and sky-high stilettos, forgetting one important detail -- her underwear, the New York Daily News reported.

Gaga flashed it all to the photographers and her fans, leaving very little to their imagination in a red latex dress on the streets in Manhattan, also revealing a racy piercing.

This is not the first time that the Poker Face singer has become a victim to one of the biggest fashion faux pas, the previous one being at the CFDA Fashion Awards red carpet in June, where she wore a strapless Mugler gown that couldn't hold down her breasts.

Actress Olivia Munn has revealed how she maintains her amazing bikini body -- sexy dancing.

The 31-year-old star, who appears opposite Sarah Jessica Parker in the comedy I Don't Know How She Does It, said that she and her friends keep in shape by creating exercises inspired by ex-boyfriends' bad dance moves.

"I came up with dance aerobic routines that we do a few times a week to a 45-minute playlist," Fox News quoted her as telling the October issue of Shape Magazine.

"They have funny names like the One-Night-Stand and the Ex-Boyfriend. We all have that ex with the stupid dance who we love to hate, right? It's so much more fun than the alternative workouts my friends plan. They always ask me if I want to go for a hike. And I'm like, 'No, why would I do that when I've got TiVo?'" she added.

Munn, who is now rated as one sexiest stars on TV and film, also insisted that one can stay in shape without a trainer, a gym or sneakers.

She swears by Pilates, which she has been doing for years.

Britney Spears sees exercise as a "spiritual thing" as it helps the mind as well as the body.

The Toxic singer keeps to a strict workout regime in order to be in peak condition for performing on her current 'Femme Fatale' tour and feels it goes beyond simply working out.

"(Exercise) is a spiritual thing, it helps your mind and your body and it's all connected. So, yes, I think it's really important to take care of yourself in that way," Contactmusic quoted her as telling Britain's Glamour Magazine.

"I work out every other day, and sometimes every day. I run a lot on the treadmills in hotels when I'm on tour and I do light weights and a little bit of cardio," she added.

Megan Fox has revealed that she ditched her vegan diet after she lost too much weight due to it.

The 25-year-old actress was pictured looking her curvy best in a low-cut top showing off her feminine figure and her legs displaying her muscles in Beverley Hills.

The former Transformers star also said that she eats everything now and trains three times a week to stay fit.

"For a year and a half, until about four months ago, I followed a strict vegan diet based on raw fruits and vegetables, no bread, sugar and coffee. But I had lost too much weight," the Daily Mail quoted her as saying.

"So now I eat a bit of everything. And I train three times a week doing circuit training with my trainer Harley Pasternak," she added.

Anne Hathaway has been pictured posing in ads for luxury handbag designer Tod's Signature Collection.

Hathaway, 28, who is starring in the upcoming The Dark Knight Rises, is seen lying across the hood of a red sports car, clutching two leather bags, one red and one blue by the chic brand.

"Anne Hathaway is the perfect representative of Tod's new Signature Collection," the New York Daily News quoted Derek Lam, the company's creative director, as saying in a statement.

"What makes this collaboration with Anne so perfect is that not only is she a young actress with accomplished roles to her credit, she is also one to watch for her creative choices," he said.

According to Women's Wear Daily, the bags come in rich, jewel tones, and while a leather clutch will set you back 1,165 dollars, a shopper will cost you 2,165 dollars.

"I have been a long-time fan of Tod's and was very excited to be a part of exploring a new side of their identity with the launch of their Signature Collection," Hathaway said.

"The designs are classic and the materials are of the highest quality. As a result, they don't grow older, they only grow better -- just like a woman," she added.

Queen of pop Madonna is said to have made a fashion blunder when she wore her stilettos with a 700 pound price tag on the bottom.

Madonna, 53, wore a long-sleeved pencil dress and fishnets on the red carpet at Canada's Toronto Film Festival, and the stickers on the Brian Attwood Zenith ankle-strap heels were clearly visible.

She was there for the opening of her film W.E., a biopic of Wallis Simpson whose love affair with Edward VIII sparked the abdication crisis in 1936.

Despite its poor reviews, director Madonna said she was "extremely proud" of the film, which stars Abbie Cornish and Andrea Riseborough.

"I'd like to make more films. I really enjoy the process," the Daily Express quoted her as saying.