04/09/2013 01:45 pm ET

The Evolution Of Kristen Stewart's Smoldering Gaze (PHOTOS)

Kristen Stewart may be widely recognized for her smoldering gaze just as much as her "Twilight" character, Bella. Smiling just isn't her thing... all the time. And no matter how much flack she gets from fans, movie producers or the media, she'd rather take the bad rep than come across as fake.

"I'm proud of it. If I took perfect pictures all the time, the people standing in the room with me, or on the red carpet, would think, What an actress! What a faker! That thought embarrasses me so much that I look like shit in half my photos, and I don’t give a f**k," Stewart told Vanity Fair.

Yet, we remember a time when K-Stew would tease us with a girlish grin (and even look like she was having a bit of fun). It added a warmth to her look that no amount of bronzer could do -- a beauty rule we absolutely stick to.

So in celebration of Kristen Stewart's 23rd birthday today (April 9), we've rounded up a few moments to convince the actress to bring back that smile. (Plus, countless photos that illustrate how her gaze has evolved over the years.)

Relive these happier times with us:

Check our other Beauty Evolutions here.

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