Rihanna's 14,000-pound hair 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 pop star was embarrassed by a wardrobe malfuction? Which supermodel's tee-shirts are facing a ban?

Here's the lowdown on the latest fashion news!

Rihanna spends 14,000 pounds a week on her hairstyle!

Umbrella singer Rihanna is said to be spending 14,000 pounds a week on one of Hollywood's leading hair stylists.

The 23-year-old singer pays top celebrity stylist Ursula Stephen 2,000 pounds a day to make sure she looks her best.

"Rihanna likes to pioneer new styles but it's costing her a fortune. She makes several public appearances a week, and the cost soon stacks up," the Daily Mail quoted one of her staff as saying.

"Ursula is a close confidante and they are together all the time."

"You have to wonder why she insists on keeping such an expensive member of her entourage on the payroll 24/7. Most of these costs are paid for by her management," the staff added.

Rihanna has changed her hairstyle 13 times since it was dyed bright red last November, including a huge red afro that got her the nickname 'Side-Show Bob' after the Simpsons cartoon character.

Right There hitmaker Nicole Scherzinger has revealed that she is very particular about her dressing on The X Factor.

Scherzinger ensures that her outfits don't clash with that of co-judge Paula Abdul's before they work together on the show.

The 33-year-old singer recently replaced Cheryl Cole after she had done just four auditions.

"As for Paula and I, we will find out what colour each other's dresses are that day and try to wear things that will complement each other," Contactmusic quoted her as saying.

"I want to wear dresses that make me feel like a woman, but I add a rock edge to it as well. That's my style and I'm an artist before I am a judge," she added.

Paris Hilton has revealed her summer diet secrets that have helped her get back into bikini form.

The 30-year-old blonde had complained of feeling "fat" on her reality TV show The World According To Paris after gaining a few extra pounds this year.

Hilton is really excited about her strict fitness regime after modelling a range of bikinis on a Malibu beach before jetting off to St Tropez this week.

"I've been working out and eating healthier and it feels great," the Daily Mail quoted her as saying.

"I've been doing Pilates to help keep my body toned and cardio in the gym."

"I'm also eating a lean diet with lots of organic fruits, veggies and vitamin juices. I have so much energy," she added.

Israeli model Bar Refaeli, who has taken to the Dead Sea in Israel, flaunted her bikini-perfect body while relaxing on the shores for medicinal mud bathing.

The occasional actress posted pictures of her relaxing by the Dead Sea on her Twitter account.

The pictures illustrated the 26-year-old model covered in mud from the salt lake, which has long been considered a positive addition to beauty regimes.

"*muddy* but feels good!! DEAD SEA- if you haven't been...well, sucks for you!" the New York Daily News quoted her as tweeting.

Singer Kelly Rowland has admitted that she can't think about the embarrassing moment when she accidentally flashed her breasts during a performance in New Jersey last weekend.

The former Destiny's Child star treated her fans to a "double nip-slip" while playing a brief solo set at the 4Sixty6 nightclub in West Orange on Sunday when her bra-style top accidentally slipped up.

The 30-year-old American singer blamed the rush of adrenaline for not being able to realise what had happened.

"That was very embarrassing. You can't feel that. Your adrenaline's going," the Sun quoted her as telling TMZ.

Padma Lakshmi looked sensational in her boxing workout gear as she showed off her well-toned body to promote US sportswear brand Danskin's 'Move For Change' campaign.

The Top Chef host flaunted her svelte figure in black lycra gym gear for Danskin, which is famous for its leggings, tights and leotards, the Daily Mail reported.

The workout fanatic has revealed that she gains 10-15 pounds while filming each season of the reality TV competition and then exercises for several days a week for 45 to 120 minutes.

The 5'9 Indian cookbook author boxes, runs on the treadmill, lifts weights and rollerskates to stay in shape.

Lakshmi, who has previously posed nude, is appearing alongside three other celebrities in Danskin's campaign, which shows them going about their individual workout routines.

Jenny McCarthy is shown doing yoga, Hilary Duff walking her dog and Christie Brinkley dancing.

Colombian actress Sofia Vergara, known for her sexy curves, has admitted that she is always in search of the "perfect bra".

Vergara, 39, revealed her bra woe in the September issue of Redbook.

"I'm always in search of the perfect bra," People Magazine quoted her as saying.

"I'll find one, wear it for a long time, and they'll discontinue it. It's the story of my life!" she added.

Pop star Lady Gaga has posed as her male alter-ago Joe Calderone for the cover of her new single You and I.

The 25-year-old singer can be seen in a moody and shabby look, smoking a cigarette and sporting sideburns and stubble for the black and white shots.

"You will never find what you are looking for in love, if you don't love yourself," the Daily Mail quoted her as tweeting along with the cover pictures.

She also informed her fans in her 991st Tweet that the music video for the song would be her 1,000th Tweet.

Jo Calderone had previously made an appearance last June when she posed as him for a series of photos in London by famous photographer Nick Knight and arranged by her regular stylist Nicola Formichetti.

And in more curious Gaga news, the singer has revealed that she believes her boots are the only things in her life that are aware of what exactly she is doing.

She feels that they understand her as they are always with her.

"There's one pair that I always like to wear. Sometimes when I'm alone in my hotel room, I look at them and I think how they are the only things in my life that know exactly what I've been through all day," the Mirror quoted her as saying.

"I often feel like my shoes are the only part of me that know exactly what I'm doing because they're always with me," she added.

Model Daisy Lowe has made her first appearance in Playboy Magazine featuring on the cover page in PVC flower-studded lingerie.

A heavy cluster of daisy flowers has been used to cover up the modesty of the 22-year-old, including one hanging provocatively from her mouth, reports the Daily Mail.

The model, who is the daughter of English singer-songwriter turned fashion designer Pearl Lowe and rocker Gavin Rossdale, has bared all in an eight page spread for the top shelf magazine.

In one of the snaps of the inside spread she is seen sitting by the side of a pool in the sun, smoking cigarettes and skinny dipping.

Lowe travelled to the Playboy Mansion in Los Angeles to shoot the spread.

Freida Pinto has revealed that she loves Chanel as they 'believed' in her from the very beginning when she was not famous.

The 26-year-old India-born actress also said the fashion house was the only company to loan her clothes for red carpet events when she was starting out in her career.

"I'll tell you why I like Chanel so much; when I started off, no one wanted to give me clothes to wear. Absolutely no one. All the labels said, 'Who is she?'" Contactmusic quoted her as telling InStyle Magazine.

"Modelling was not completely satisfying. But Chanel believed in me from the very beginning."

"For the very first red carpet I did at the Toronto Film Festival in 2008, they dressed me up in their very current season collection. It's a massive brand, why would they invest in someone who is nobody," she added.

Adverts promoting tee-shirts carrying the slogan 'Nothing tastes as good as skinny feels!' have been banned for encouraging eating disorders among young girls.

The Advertising Standards Authority has banned the statement, which was extolled on children's tee-shirts and promoted by Kate Moss.

The tee-shirts, which appeared on website Zazzle, were being sold for 14 pounds and have been slammed as being "pro anorexia".

The slogan flashed across the tee-shirts was originally the lifestyle motto of model Moss in 2009 and has been condemned by campaigners, including groups like Say No to Size Zero and Beating Eating Disorders (BEAT)

"There are 1.1 million eating disorders in the UK alone. Kate Moss's comments are likely to cause many more. If you read any of the pro-anorexia websites they go crazy for quotes like these," the Daily Mail quoted Katie Green of Say No to Size Zero as saying at the time.

Those against the slogans raised their concern stating it "might encourage children to develop an unhealthy body image and an unhealthy relationship with food".

"We told Zazzle to ensure future ads were not irresponsible and, particularly where they were addressed to or depicted children, did not contain anything that was likely to condone or encourage an unsafe practice or to result in their physical, mental or moral harm," they added.

Rosie Huntington-Whiteley has spoken out about being the world's hottest woman.

Huntington-Whiteley, 24, who has been voted Elle Magazine's 'Model Of The Year', FHM's 'Sexiest Woman' and topped Maxim's Hot 100 list, was very coy about the accolades.

"It's very flattering. I'm not quite sure what to make of it really," the Mirror quoted her as saying.

"It's a real honour if I ever make it onto anyone's wall!" she stated.

Hollywood newbies Olivia Wilde and Emma Stone have been tapped as the new ambassadors for Revlon.

Joining the likes of Kate Bosworth, Jessica Alba and Halle Berry, the two Hollywood beauties will work with global artistic director Gucci Westman to front campaigns for new and existing Revlon products.

Westman told WWD that both the beauties "embody strength, beauty and femininity".

"Emma is so classic in a Grace Kelly, real moviestar way and she is an amazing actress as well. Olivia has the most unbelievably beautiful eyes and she is also cool and intelligent. I cannot wait for everyone to see our new Revlon campaigns," The Telegraph quoted him as saying.

The campaign is due to be released early next year.

Katie Holmes has revealed that she prefers dressing up more when she is in Europe, and that she likes her style to reflect the city she is in.

Holmes, 32, said she hates to stand out in the crowd and so changes her wardrobe to match the world she is in.

"I like dressing to suit the places I travel to," Contactmusic quoted her as saying.

"So if I'm in New York, I'll wear a little more black. In Europe I try to be extra dressed-up and in LA I'm probably my most laid back. I lie to fit in," she added.

Mean Girls actress Lindsay Lohan's sister Ali is said to have signed a modelling contract with NEXT Model Management.

Ali, 17, has signed a multi-year deal with the agency representatives who are looking forward to working with her.

"We are very excited to be representing Aliana Lohan. She represents the future face of fashion and will be a photographer's dream with her chameleon-like beauty," the Daily Star quoted Alexis Borges, NEXT Los Angeles Director as telling JustJared.com

The teenager has previously fronted a promotional campaign for her sister's 6126-fashion range.

While most of us don't know much about fashion and makeup at the age of 14, Madonna's teenaged daughter Lourdes has launched her own range of makeup.

The new line that will become available at Macy's and Macys.com for 7-12 dollars includes body lotions, body washes, mists, lip-glosses and nail polishes, the Daily Mail reported.

The highly decorated bottles and compacts are adorned with floral and lace print, which are symbolic of the 52-year-old singer's notorious fingerless gloves.

The 14-year-old, who seems to have inherited her mother's desire to rule the world, launched her own fashion line at the age of 13.

This could be a real treat for perfume-lovers -- at least the ones who are super-rich!

New York fashion brand DKNY (Donna Karan New York) has created the world's most expensive perfume flask worth one million dollars, reports the New York Daily News.

Designer Donna Karan had teamed up with celebrity jeweller Martin Katz to create a 14-karat yellow and white gold flacon of her scent Golden Delicious.

The luxe bottle is bedazzled with nearly 3,000 precious stones from all over the world, including a Paraiba tourmaline from Brazil, an oval cabochon sapphire from Sri Lanka, round pink diamonds from Australia, round rose-cut diamonds, an oval-cut ruby and a pear shape, rose-cut diamond.

The gemstones were carefully placed to form the skyline of Manhattan.

The apple-shaped flacon will be showcased all over the world before being sold to benefit the Action Against Hunger charity.