Birthday: June 4

Angelina has gone from rebellious teen to one of the most admired women in the world as she hits her milestone birthday. “I’d like to think I’ve become a better woman as I’ve gotten older,” says the once-controversial actress. Despite huge public appeal, it looks like we might be seeing less and less of the Hollywood star on the screen in her 40s as her humanitarian work takes over. “I just assume the older I get, the more it’ll go away; the more private I’ll become,” she reveals.

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Birthday: August 7

South African beauty Charlize is outspoken about hitting her 40th birthday saying, “It’s ironic that we’ve built the beauty world around 20-year-olds, when they have no f***ing concept about wisdom, what life is about, having a few relationships below their belt and feeling hardships, to grow into their skin and feel confident within themselves and to feel the value of who they are, not because of a man or because of something like that.”

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Birthday: February 22

She has overcome drink, drugs and a childhood in the spotlight to become one of the sweetest and smartest women in Hollywood. Flower loving hippy-at-heart Drew says of her big day in 2015, “When I turn 40 I’m going to heave a huge sigh of relief. I’m so happy to be there. I really am. You work so hard to get there and it’s just awesome."

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Birthday: March 15

Like a fine wine Eva is getting better with age. The former Desperate Housewives star says she is better at 40 than she was at 30, “I had no idea what was happening ten years ago. I was in a big vortex of madness. I feel more intelligent about a lot of other things now. So that makes me feel sexy.”

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Birthday: May 2

Putting the 'phwoar' into 40, is global footballing legend and all-round hunk David Beckham. Victoria faced the big 4-0 in 2014 and now it's the turn of her hubby, who is hoping for a low-key celebration to mark the occasion, “I have four amazing children and an amazing wife. I started riding motorbikes about eight years ago, so my mid-life crisis must have started early,” he says. “But I'm happy where I am in my life right now and I am looking forward to my birthday. Hopefully it will be a low-key one.”

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Birthday: May 29

Mel B might have taken offence at her fellow X Factor judge Cheryl Fernandez-Versini, who hinted that the Spice Girls were “old and wrinkly” when they made their comeback in 2008, but the star is certainly not worried when it comes to turning 40. However, the outspoken former Spice Girl isn't ruling out plastic surgery in the future. “When things start to sag in 10 or 15 years, I wouldn’t say no - although I hate needles. I don’t mind pushing my body during workouts, but with any other kind of pain I’m a complete baby,” she reveals.

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Birthday: March 25

For fans of Sex And The City, SJP will forever be thirtysomething writer and fashion addict Carrie Bradshaw. It's almost impossible to believe that in real life, style icon Sarah is turning 50 but the star stays youthful thanks to her beauty addiction. “I believe in buying as many anti-ageing creams as possible,” says the mum-of-three. "Use any cream that says ‘elimination’ in big bold letters on the jar!” Sarah threw a surprise 50th birthday party for her husband Matthew Broderick in 2012, so we will see if hubby Matthew returns the favour in 2015.

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Birthday: February 24

Sex And The City star Kristin Davis shares her milestone birthday with co-star SJP in 2015. The actress most famous for her role as Charlotte in the hit TV show says her continuing good looks are all down to genes and sunscreen. “My mom looks great for her age, so I think genetics has a lot to do with it. Also, I don't drink, I don't smoke, and I love my Ahava sunscreen,” she says.

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Birthday: June 10

British actress and socialite Liz has an incredible bikini body despite nearing her 50th year. However, The Royals actress disagrees with the old saying 'you can't be too rich or too thin', especially as the years tick by. “I keep my eye on what I eat all the time, because now that we're older we have to make a conscious decision if we want to stay relatively slim,” she says. "But as you get older, it doesn't actually look that attractive to be super skinny.”

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Birthday: April 4

No iron supplements for Iron Man star Robert whose wild Hollywood ways almost threatened to cut short his years. After spending most of the 1990s addicted to substances and in jail, he has since turned his life around, shaped up and is finally on top of his game, all thanks to the Avengers franchise and his alter ego, Tony Stark. Downey says of his recent meteoric rise, “I used to say that I’d welcome a bullet to the forehead if I ever ended up as a fortysomething, remarried, marketable, big-action movie dad, living in a cosy cul-de-sac in suburban LA. Now I am that guy!”

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