"Twilight's'" Leading Lady, Kristen Stewart, has just turned 22 years old yet it looks as if she hasn't aged a day.

Her onscreen and off-screen beau, Robert Pattinson, is indeed one lucky guy to be dating this all-American beauty. Take a look at how Kristen Stewarts's best red carpet looks evolved throughout the years.

Kristen Stewart is barely recognizable as the child who played Jodie Foster's teenage daughter in the film, "Panic Room". Before the 22-year old donned high heels and fashionable gowns, Kristen Stewart rocked the sneakers and jeans look for her red carpet appearances.

Now that she's the new face of Balenciaga, all that has changed. Stewart is seen half the time in chic and feminine clothes that definitely complement her gorgeous looks and her dazzling skin tone. Her airport looks comprise of ordinary Keds and tight-fitting jeans but once the "Twilight" actress steps onto the red carpet, she turns heads and captures hearts.

According to Hollywood Life, Kristen & Robert enjoyed a low-key date night with a few friends at the LA Bar, Harvard & Stone last April 7 where they had "lots of drinks on the top floor" and enjoyed a "burlesque show."

"It is a really small, very cool hidden spot so no one paid any mind to them or seemed to notice," shared the eyewitness. "I saw them as they came down to exit ... I was leaving at the same time. Rob was rounding the group up and Kristen went first with friends and Rob followed."

Her British boyfriend, Robert Pattinson, may have covered all the sweet and romantic details for Stewart's birthday but the birthday greetings from her co-stars in the film, "Snow White & the Huntsman" are incomparable.

Stewart's co-stars in the film, "Snow White & the Huntsman", Charlize Theron, Chris Hemsworth and Sam Clafin also took part in the birthday greetings where each posted a video birthday greeting for the one and only KStew.

In the words of Charlize Theron: "Keep Rockin" Kristen Stewart and wishing all the best for the fairest of them all. "Twi-hards" are surely creating one hell of a birthday greeting for one half of their "Robsten" addiction.

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