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These three women -- Kate Beckinsale, Sandra Bullock and Taylor Momsen -- all have had very different careers, and have very different style. But one thing they share in common is their birthday: July 26th!

Kate Beckinsale turns 40 today (though she doesn't look a day over 30!). We're looking at her style through the years since she started out in the early '90s as Hero in Much Ado About Nothing, and rose to superstardom through the beloved Pearl Harbor and action flicks like Underworld. She is effortlessly beautiful, even when taking style risks, and typically sticks to classic colors like white and black.

Another star who has shown a deep love for wearing the always-chic black is Taylor Momsen, who has had a striking style transformation from her days as Cindy Lou Who in The Grinch to Gossip Girl and today. She went from bright colors and girly silhouettes to bold and daring clothes and makeup. Taylor turns 20 today.

Sandra Bullock has had a consistent career since she burst on the scene in the early '90s, and has been just as consistent with her style. Today is her 49th birthday (and she's never looked better) -- and we're loving how she has always loved classic silhouettes and colors, one who knows the power of a little black dress.

Click through the gallery above to see a style transformation of these very different -- yet equally fashion-savvy women.

Photo Credit: Getty Images