Sherlyn's Playboy silence 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 has tweeted a topless pic of herself? Which cash-strapped actress is selling her designer wardrobe?

Here's the lowdown on the latest fashion news!

Sherlyn Chopra asked to stay mum about Playboy mag release date

Sherlyn Chopra has been asked to keep her mouth shut by editors of American magazine Playboy, it has been revealed.

The diva, who is the first Indian woman to feature on the cover of the magazine, has been instructed to keep "mum" about the release date of the magazine, which has already been "delayed."

The issue with Chopra on the cover was earlier scheduled to hit stores by November, but that did not happen.

Many of her anxious fans recently took to Twitter to ask the bombshell when the issue is coming out.

"Ya'll ask me each day about the release date of my PLAYBOY Cover. I truly wish I could reveal it to you. I've been asked to keep mum about it," the 28-year-old model tweeted in reply.

"PLAYBOY has super grand plans pertaining to the unveiling of my cover. Uncommon Chutzpah shall soon be served with Phenomenal Excellence," she tweeted, as she asked her fans to have patience.

Supermodel Bar Refaeli -- one of the most in-demand bikini models -- posted a topless photo of herself on her Twitter account on Monday.

Leonardo DiCaprio's former girlfriend had last posted a candid snap of herself during a painful-looking dental examination.

The photograph features the former Sports Illustrated model topless, while submerged in water, with the caption, "Watch your back!"

In the black and white image, Rafaeli can be seen from behind wearing nothing but a checkered string bikini bottom -- with visible tan lines -- as she coyly holds her triangle top, the Daily Mail reported.

She also posted a mysterious picture of herself with five small children, and wrote: "Can u think of a better day to start the day?"

Kate Upton, who has appeared in pin-ups for US Vogue twice, has scored a photoshoot for the magazine's British edition.

The Sports Illustrated swimsuit model has been picked by British Vogue editor Alexandra Shulman to star on the cover of the style bible's January 2013 issue, the Telegraph reported.

"When I decided to shoot Kate for our first cover of 2013, it was to kick off the year with a young woman who is not a stereotypical fashion model -- although, let's face it, she's hardly a heffalump!" Shulman wrote in her editor's letter.

Indeed, 20-year-old Upton's physique doesn't make her an obvious candidate for a high fashion role: at 5'10" and with a generous 34C chest, her hips are some two-and-a-half inches wider than that other famous Kate -- Moss.

"It's very rare for a girl; to move from one area of the business to the other, largely due to the fact that fashion models are almost without curves, whereas swimwear girls are celebrated for them," Shulman added.

Lindsay Lohan has turned to selling off her extensive wardrobe of designer clothes in a bid to raise funds, according to reports.

The Liz & Dick star has apparently been sending her little sister Ali to hawk her wares to the popular Wasteland store in Los Angeles that specialises in second hand threads, TMZ.com reported.

An eyewitness told Radar Online that the 18-year-old, who apparently had a significantly larger bust than previously, turned up to the shop with bags stuffed full of items.

She then tried to broker a deal with the manager of the establishment, but was disappointed after being offered far less than she anticipated.

Ali reportedly shouted: "Thirty dollars for these? They cost 700 dollars! This is ridiculous!"

The wannabe singer then tried to haggle for the items, which included a pair of round-toe Chanel pumps and a Balenciaga purse.

Ali even tried to change her bartering tactics, arguing that because her infamous sister had worn them on red carpets and at photoshoots they are worth extra.

"These have to be worth more, Lindsay was photographed wearing them, that has to add value," she said.

As the manager refused to move the price, she left with significantly less cash than hoped for.

Rihanna is delving into the world of fashion, as she stars in a reality television show competition that will challenge designers to make outfits for a handful of celebrities, US cable channel Style Network has revealed.

Styled to Rock, set to premiere in the latter half of 2013, will feature 12 young designers handpicked by the Barbadian Grammy-winning singer, Stuff.co.nz reported.

The designers will be tasked with styling a celebrity guest on each episode, and the guest will help determine which designer moves on to the next round of the competition.

"Fashion has always played an integral part in my life and career. I am so excited to partner with Style Network and share my creative insight with these 12 designers and give them this opportunity to showcase their work," she said in a statement.

Rihanna will also serve as an executive producer under her given name, Robyn Rihanna Fenty.

Style Network has yet to announce which celebrities will guest-host or the fashion experts who will serve as mentors to contestants.

Jenny McCarthy has opened up about the effects of aging on her body, comparing her breasts to a "sack of potatoes."

The 40-year-old joked about her famous figure in a tongue-in-cheek online article, in which she talked about looking up her past lovers when she joined Facebook.

"I had thoughts of wanting to show an old flame how good I got in the sack," the Daily Mail quoted her as writing on online magazine Splash.

"When I was young I just laid there like a sack of potatoes."

"As soon as my boobs started to resemble a sack of potatoes I knew I had to learn actual techniques to distract any guys from seeing my own aging sack of potatoes," she said.

Kylie Minogue, who is one of the most photographed people in the world, has revealed that she is alarmed by what she sees when she looks at herself in the mirror.

The 44-year-old singer said that gravity has taken hold of her face.

"I am not going to lie about this. There are lots of times I look in the mirror and I see that gravity has taken hold," the Daily Mail quoted her as telling Elle Magazine.

"Or suddenly see my face on a phone or on Skype and it's like a Spielberg special effect and you just scream, 'Who is that?'" she said.

The I should be so Lucky hitmaker, who is famous for her love of hot pants, also admitted that she frequently forgets that she is no longer young.

"Sometimes I forget (I am 44) and I think, 'I must get those hot pants out of retirement.'

"And then some mornings I look in the mirror and I see 94 not 44. That is the reality before the makeup. And midriff tops are definitely out for good," she added.

Miranda Kerr has revealed that she follows her grandmother's tips to keep her hubby Orlando Bloom happy, which includes wearing nice underwear and makeup, both of which she fortunately has plenty of access to.

The 29-year-old Victoria's Secret Angel, who has been married to the actor since July 2010, divulged her grandmother's secrets during an interview on The Late Late Show With Craig Ferguson on Monday.

"My grandma said, 'Men are very visual, so don't forget that'," the Daily Mail quoted her as saying on the show.

"She said, 'Every day, put a little makeup on, put on some nice underwear, and you'll keep your husband'," she added.

Madonna's iconic conical bra was sold for 32,450 dollars, more than double the pre-sale estimate of 15,000 pounds, at an auction in south-west London.

The green silk costume -- designed by Jean Paul Gaultier -- sparked a bidding war at the Christie's sale, the Daily Mail reported.

The pop diva wore the outrageous dress to perform three songs, including her hit Hanky Panky, on her 1990 Blond Ambition tour, the paper said.

A black Lycra two-piece that she wore to sing Vogue was sold for 16,250 pounds.

The highest price raised at the pop culture sale was 43,250 pounds paid for a 1947 painting of American actress Ava Gardner.

A whip used by Harrison Ford in the Indiana Jones trilogy fetched 20,000 pounds, while a pearl white sleeveless jumpsuit worn by Mick Jagger for the Rolling Stones' US Tour in 1972 fetched 20,000 pounds.

Another Indiana Jones prop, a manuscript book called Grail Diary raised 18,750 pounds.

Elvis Presley's 1960s Fender guitar and mic went for 8,750 pounds while his 1971 gold Mathey-Tissot watch raised 8,125 pounds.

Anne Hathaway has revealed that her obsession with being thin is a source of "shame" and that she constantly worries about her body.

"I still feel the stress over 'Am I thin enough? Am I too thin? Is my body the right shape?'" ABC News quoted her as saying during an interview with Glamour Magazine.

"There's an obsessive quality to it that I thought I would've grown out of by now. It's an ongoing source of shame for me," she said.

Hathaway lost 25 pounds for the film version of Les Miserables, which comes out December 25.

In an interview with Allure earlier this year, the 29-year-old actress said that she subsisted on a 500-calorie diet of radishes and hummus to play tuberculosis-ridden prostitute Fantine.