By Megan Segura, Daily Makeover

Katy Perry is the most recent celebrity to be dropped from a beauty endorsement. Learn the surprising reasons why so many other celebs have lost their endorsement deals.

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.Exfoliation: A crucial step to maintaining a clear, glowing, gorgeous complexion - or is it? While all of the doctors and aestheticians we've spoken to over the years agree that it's a necessary step to make your skin looks its best, they also told us that it's the number-one skin care product they see women abuse.

"Women think that if they exfoliate more frequently, they will get rid of dead skin cells," says Dr. Marko Lens, a plastic and reconstructive surgeon and founder of the skin care line Zelens. "However, they don't know that this will not give the skin time to follow a natural renewal process - the so-called natural turnover of epidermal cells - which is crucial in skin regeneration." And, depending on your skin type, that can lead to anything from more breakouts to thin skin, dryness, and premature aging. Yikes.

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Imeh Akpanudosen/Getty; Amanda Edwards/WireImage; Joe Scarnici/WireImage; Jason Merritt/Getty; FAMEFLYNET PICTURESDrew Barrymore loves switching up her hair color, but somehow, it never looks dry or damaged. Her secret? Making drastic changes slowly. Over the course of a few months, the star has been gradually lightening her deep brunette to the sunny blonde she revealed while out in Hollywood yesterday. "I changed my hair color three times in the past year!" the star told InStyle in February. "Why not try new things? Life is short. I'll always play." That's the spirit, Drew! Going from dark brown to a light blonde like Barrymore's can be damaging, so if you're also feeling playful with your color, follow the star's lead and work in stages. "Try taking the process with days or even weeks in between to see if your hair will get too dry or damaged," said colorist Marie Robinson, who works with Michelle Williams. "Start with a color close to your natural that is a subtle enhancement. If you notice excessive dryness, then work with the lightness you already have." Because blonde hues tend to make

Evelyn Crowley

Gravity: fundament of physics, foe of aging physiques. Those of us north of 30 must go the extra mile (literally) to maintain the sort of shape that, at nineteen, came with the territory. In Hollywood, especially, where youth and beauty are considered tantamount to talent, the pressure to stay toned and looking fit is enormous. Recently, however, several leading ladies seem to have cracked the code, debuting enviable proportions that aren't just on par with-but an actual improvement from-their days as dewy ingenues. Gwyneth Paltrow's sheer Antonio Berardi dress at this week's Hollywood Iron Man 3 premiere drew gasps not because it was risqué but because the 40-year-old star looked so phenomenal in it. And, at 47, House of Cards' Robin Wright's svelte arms and muscular calves are nothing short of inspirational. Here, Vogue.com takes a look at those whose bodies, like a fine cabernet, have gotten better with age.

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By Shannon Farrell, Daily Makeover

Create the illusion of a slimmer face with these hairstyles suggested by a top New York stylist. Now that's a diet trick we can get behind.

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Wedding Day Makeup Of all the days to skimp on makeup, your wedding is not one of them. After all the planning, the pinning and the picking, the last thing you want is to hate how you look in every wedding photo for years to come. A good makeup artist is key, but the actual process of finding the makeup artist that's right for you can be a bit daunting (especially considering your wedding is likely the first time you've ever had to think about looking for a makeup artist). To get the expert insight on how to find the best makeup artist for your wedding, we went to celebrity makeup artist Jo-anna Lynn of Sally Hershberger Salon. Besides just telling us the price range, traits to look for in a good artist and red flags to avoid, she also gave us her tips for how to look your best on your wedding day. Below are Jo-anna's words of wisdom.

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How to search for a great makeup artist: Jo-anna says that if you see a

Rex USA; Courtesy Photo; Time Inc Photo StudioOh, baby! Duchess Catherine and Prince William still have a few more months before their little one arrives, but Butter London has already created a nail polish to commemorate the mini-monarch. Named "Pitter Patter" to mirror the sound of tiny footsteps soon to be heard all over Buckingham Palace, the shade is an ultra-deep eggplant with dynamic plum shimmer. Ever since Roman Emperors donned the bold hue, purple has been commonly considered a sign of nobility, and we can't think of a more stylish way to celebrate the arrival of the royal baby. This marks the third regal lacquer created by Butter London, with the shimmery violet "No More Waity, Katie," celebrating Will and Kate's engagement, and the lavender steel "Lillibet's Jubilee" to honor Queen Elizabeth's 60 years on the throne. Shop Pitter Patter now for $15 at butterlondon.com.

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What do tigers, four-wheel trucks, and Coke bottles have in common? They're the latest accessories in the glam world of competitive hair styling. Detroit is home to the annual "Hair Wars" started in 1985 by local promoter David Humphries whose mission was to turn hair stylists into stars. "Over the years, I've seen some crazy hairdos," Humphries told Yahoo! Shine. "One person had 20 baseballs in their hair, another pulled a live python snake out of their zippered do, others crafted 'Hairy-Copters' with rotating blades and lights. I've also seen a BBQ grill style, complete with a working George Foreman Grill." This year's showcase, held on April 28, featured styles that defied creativity and even gravity. Check it out. -By Elise Sole.