It's official, if you're a brunette like Carla Bruni, you're more likely to marry a successful man than your blonde counterparts. Experts at LOVE@LYCOS the dating channel of Lycos.co.uk analysed the WAG's hair colour of the world's top 100 billionaires to determine if there is a predominant hair colour wealthy men seen to go for. The majority by a long way were brunettes, with 62% of billionaires marrying women with brown hair.

The results went on to show that fair haired ladies come in a poor second with only 22% of the world's top billionaires marrying blondes. Women with black hair lag behind in third place, enticing on 16% of the world's wealthiest, whilst carrot-tops come in last.

In Western celebrity culture we can trace the ebb and flow of the eyebrow. In the 1940s and 50s, female movie stars often removed their eyebrows completely. "Eyebrows, any body hair, anything suggestive of masculinity had to be immediately erased," explained Zoe Williams, a zeitgeist columnist with The Guardian newspaper. "There was a real interest in ramming home the difference between the genders."

Why? Was it a conscious effort to redefine femininity after the austerity of the war years? Who knows. But check out Ronald Coleman's slugs and Marlene Dietrich's sliver in Kismet, and you're left in no doubt who's man, who's women and the gulf between.

"Then in the 60s, everything got a lot more androgynous," continued Williams. Hair grew everywhere for years. It sprouted all over men and women. The bushy brow's zenith was reached on Brooke Shields' face in The Blue Lagoon. Society's evolution can be traced through the eyebrow. In the 80s eyebrows thinned again, reflecting the self-obsession and greed of the age. Power suits, shoulder pads, enormous cell phones and scary, mean, thin eyebrows. Watch Wall Street. You'll see. Women were groomed to within an inch of their lives.

Britney Spears' lopped-off locks can be yours for just $US1 million ($1.27 million) on eBay - direct from the salon owner whose clippers the newly-shorn star used during her weekend meltdown. Esther Tognozzi of Esther's Haircutting Studio in Tarzana, California, is hawking the high-priced hairball - along with the pop princess' leftover Red Bull energy drink and her blue Bic lighter. "We still don't know why Britney chose our shop. We'll probably never know," said the shop owner's husband, JT Tognozzi.

He said some proceeds from the sale would go to charity, possibly including the Florida-based Locks of Love, which supplies wigs to kids with cancer. The Tognozzis say the decadent diva's thick pile of dark tresses and extensions is the only authentic Spears hair on eBay, despite dozens of competing claims. A quick search of "Britney Spears hair" turns up a slew of enterprising copycats - offering everything from a $US3,000 ($3815) lock of dark hair from a seller in Ohio to a $US90,300 ($114,850) blond tuft - the wrong colour.

Canadian web developer Hazim Gaber asked for upwards of $US1 million for hair he claims his employee snatched off the salon floor. He even promised to release a web video as proof of authenticity. But Tognozzi said the only people in the shop during the incident were his wife, her assistant, Spears and the singer's bodyguard. All the doors were locked and the shop was already closed for the night when Spears arrived, he said. "It's pretty crazy, all the frauds and stuff that's out there," Tognozzi said, adding that he would be surprised if anyone fell for them. "They're not even in our state."

Revlon Colorist is the first-to-market haircolor system that uniquely delivers one of the most sought-after features in home haircolor: fade resistant color. Revlon Colorist provides a great base of rich, radiant all over color that stays refreshed and shining for up to six weeks with an easy 2-minute application of Colorglaze once a week in place of regular conditioner. Each kit comes with salon-quality, permanent haircolor plus a shade-matched Colorglaze. The line is available in 26 vibrant shades.

The product will be supported by a multi-media campaign that will include television, print, in-store and internet placements featuring Crow's original version of the Buddy Holly hit "Not Fade Away." The campaign was shot by famed photographer Ellen Von Unworth in Nashville and New York.

"We are thrilled to launch this revolutionary product with Sheryl Crow as our spokesperson," says Debra Dowd, Vice President of marketing for Revlon's hair business. "The 'Not Fade Away' message stays true to our product as well as to Sheryl's determination and commitment to women's issues."

In addition to her role as spokesperson for Revlon Colorist, Crow will serve on the advisory board of The Revlon/UCLA Women's Cancer Research Program's national clinical network of oncologists. The network provides patients throughout the country with access to cutting edge clinical trials without having to travel away from homes and families to comprehensive cancer centers for treatment. As an advisory board member she will help identify network sites in underserved communities around the nation. Crow will also act as an ambassador for the Revlon supported National Breast Cancer Coalition (NBCC), the largest grass-roots organization for breast cancer policy and advocacy, to help pass legislation for uninsured and underinsured women across the country. She will be guest of honor and participate in the Revlon Run/Walk in both New York and Los Angeles in which tens of thousands of breast cancer survivors and others touched by the disease participate raising money to support education and research programs.

"We are very excited to have someone of Sheryl's great beauty, both inner and outward, as the new spokesperson for our company," says Revlon CEO David Kennedy. "Sheryl will not only be a terrific partner in our business but she will be invaluable to us in supporting our various initiatives in women's cancer research and treatment. I think together we can truly make a difference."

"I'm happy to be part of the Revlon family and to be associated with a company that -- through their various initiatives -- has and continues to support breast cancer research and women's issues." - Sheryl Crow.

Where one door closes, another opens -- especially when it comes to beauty boutiques and A-list actresses. Just a month after Scarlett Johansson's role as the face of Calvin Klein fragrances came to an end, the bombshell blonde actress has been swept up by L'Oréal Paris to represent its new colour line: HIP High Intensity Pigments. "It's wonderful to be working with L’Oréal, a company that has celebrated independent women for years," says Scarlett. "I'm very excited to be part of this campaign, which is modern and fashion forward." The Match Point star, who is thought to have made $1 million-a-year through the cK contract, is estimated by industry sources to have been wooed by a $3 million-a-year deal this time around, according to WWD. HIP is expected to generate sales of $50 million in its first year and Johansson's contract will likely include the promotion of further make-up and haircare products in the future. Her first ads for the brand will air during the Golden Globes, of which L'Oréal Paris is the sole beauty sponsor, on January 16.

Madmoiselle: Do you play with makeup to enhance your professional image?

Vanessa Paradis: Sure, I wear a lot of makeup when I'm working, but otherwise I try to get away from it.

MLLE: If makeup's not a big thing for you, then what do you consider your beauty secrets?

VP: I'm sorry, but I do nothing at all.

MLLE: Come on, really? Not even when it comes to diet or exercise?

VP: Oh, I don't do anything like that! My only regime is drinking water. And getting enough sleep.

Too hurried to perfectly primp each morning? Tired of squandering precious time and money each month at hair, nail and waxing salons? Good news: Letting yourself go is becoming all the rage. Or, at least it's in keeping with beauty's latest trend toward more relaxed and natural grooming.

Stylists are calling it "slobby chic," "earthy elegance" and "modern bohemian." But by any name, you're sure to see lots of it, in the form of shaggy or long, wavy hair; messy ponytails with tendrils falling about; thicker, less sharply arched brows; short, colorless nails, and neatly scrubbed faces on the fashionable and the famous--and not just in Saturday morning paparazzi photos.

"On many people, it may seem effortless, but it's not," says Emily Dougherty, beauty and fitness director for Elle magazine. "They're still having their nails done--just getting them buffed, or done in clear and neutral shades. Even though they might not be getting Botox, they're placing great emphasis on having good skin, maybe having microdermabrasion done, or a chemical peel. And they're still getting their hair done. The funny thing is that the 'undone' look is usually harder for a stylist to pull off than a polished look. But people are just so tired of blowouts."