Christina Aguilera is arguably one of the greatest singers in the world. Her vocal range and ability to captivate an audience is truly exceptional. Aside from being one of the world’s best artists, she is an actress, a songwriter, an LGBTQ ally, and an amazing mother.

To celebrate her 39th birthday, let’s explore some of her best looks and performances over the past few years.

• GALLERY: Christina Aguilera Through The Years

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  Christina Aguilera performs onstage during the 2017 American Music Awards at Microsoft Theater (Photo by Kevin Winter/Getty Images)

• GALLERY: Christina Aguilera Through The Years

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  Christina Aguilera attends the 2018 Billboard Music Awards at MGM Grand Garden Arena in Las Vegas, Nevada.

• GALLERY: Christina Aguilera Through The Years

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  Christina Aguilera performs onstage during the 2018 Billboard Music Awards
• GALLERY: Christina Aguilera Through The Years

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  Christina Aguilera hosts an intimate listening party for her biggest fans on Pandora to preview her upcoming album, LIBERATION,

• GALLERY: Christina Aguilera Through The Years

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  Christina Aguilera posese backstage at the Christian Cowan Show during New York Fashion Week

• GALLERY: Christina Aguilera Through The Years

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  Christina Aguilera performs during the Times Square New Year's Eve 2019 Celebration on December 31, 2018 in New York City.
• GALLERY: Christina Aguilera Through The Years

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  Christina Aguilera attends D23 Disney Legends event at Anaheim Convention Center

• GALLERY: Christina Aguilera Through The Years

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  Christina Aguilera attends the premiere of MGM's "The Addams Family" at Westfield Century City AMC

• The 10 Best Songs To Dedicate To Mom

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  "Oh Mother" - This heartbreaking ballad talks about Christina Aguilera's mom and her struggles in an abusive relationship. It's also a celebration of their friendship and how close they are.
• GALLERY: Christina Aguilera Through The Years

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  Christina Aguilera attends the 2019 American Music Awards at Microsoft Theater

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