Kaley Cuoco's Beauty Transformation

Paul Archuleta/Getty Images

See the Big Bang Theory star's changing looks through the years.

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2002

Kaley Cuoco - Transformation - Hair - Celebrity Before and After

Gregg DeGuire/WireImage

The actress wore dramatic highlights while promoting her role on 8 Simple Rules.

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2003

FITZROY BARRETT / GLOBE PHOTOS INC.

She hit the premiere of Shanghai Knights with a sleek pompadour.

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2004

Jean-Paul Aussenard/WireImage

Cuoco wore a quirky updo at the People's Choice Awards.

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2006

Jesse Grant/WireImage

The Charmed actress hit the WB All-Star Party working face-framing layers and tapered fringe.

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2007

Charley Gallay/Getty Images

Cuoco joined the cast of The Big Bang Theory and wore her platinum hair in a sophisticated chignon.

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2008

Michael Germana / Superstar Images / Globe Photos

The star wore a sleek center part and shimmery pale eye makeup at the Genesis Awards.

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2009

Gregg DeGuire/PictureGroup

She added dimension to her blond layers with a deep auburn under-layer.

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2011

ROBYN BECK/AFP/Getty Images

For the Golden Globes, the presenter sported an ultra-long wavy ponytail.

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2011

Jeff Kravitz/FilmMagic

Cuoco played up her light eyes at the Emmys with a smoky shadow and lush lashes.

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2012

Picture Perfect / Rex USA

Cuoco channeled Bardot to host the People's Choice Awards-pairing black liner with light lipstick and tousled voluminous locks.

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2013

Jon Kopaloff/FilmMagic

The actress sported pretty waves and a half-updo with a center part.

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2014

Jesse Grant/Getty

Cuoco wore her short hair in a voluminous pompadour to an ASPCA event.

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2015

Jason Merritt/Getty

The actress wore her short pixie cut shaggy while at the premier of The Wedding Ringer.

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2016

Jon Kopaloff/FilmMagic

Cuoco wore her hair in a short, wavy lob to the 2016 InStyle And Warner Bros. 73rd Annual Golden Globe Awards Post-Party.

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2017

Paul Archuleta/Getty Images

The Big Bang Theory star grew her blonde hair out into a lob, which she styled in loose waves.

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Kaley Cuoco's Beauty Transformation

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2017

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