Britney Spears has changed her look many times throughout the years -- blonde, brunette, shaved head, bangs, center-parted and extensions. She has also had her emotional ups and down, with her husbands, kids, boyfriends, managers, parents and the paparazzi. There has been one constant through it all and that's Brit Brit's warm and winning smile!

As she inched towards her late 20s and early 30s, things leveled out and calmed down for the sexpot superstar both personally and professionally. She is a proud mom of two, is still putting out great dance music and continues doing her thang!

We've compiled our favorite shots of Britney and her infectious, enviable, toothy smile here. Her smile is so pretty and like a dose of sunshine in our day! And she has a really good dentist.

What an infectious smile! Brit was caught mid-laugh here.

Britney Spears
Kevin Winter, Getty Images
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Glossy lips, golden hair.

Britney Spears
Christopher Polk, Getty Images
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Mysterious, like a cheshire cat.

Britney Spears
Tim Mosenfelder, Getty Images
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My, what nice teeth you have, Brit!

Britney Spears
Frazer Harrison, Getty Images
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Who's making Brit laugh?

Britney Spears
Ethan Miller, Getty Images
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Look, Ma, two (dirty) hands and a purdy smile!

Britney Spears
Kevin Winter, Getty Images
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Simple, warm and inviting -- her smile.

Britney Spears
Jason Arthurs, Getty Images
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Brit Brit in mom mode -- that's a natural, lit-from-within glow.

Britney Spears
Pacific Coast News
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Looking at someone sideways, but with a twist.

Britney Spears
Kevin Winter, Getty Images
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It's a good thing Brit has nice teeth, since she flashes her chompers a lot.

Britney Spears
Kevin Winter, Getty Images
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On the go, hair in a bun, paparazzi following her, smile in tact.

Britney Spears
Pacific Coast News
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Shades and a smile.

Britney Spears
Pacific Coast News
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A mouthful of hair!

Britney Spears
Rick Kern, Getty Images
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Brit may have been a brunette but the smile was still 14 karat.

Britney Spears
Frederick M. Brown, Getty Images
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With boys this cute, how can she not smile?

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