Uma Thurman, is that you?

The 44-year-old actress looked almost unrecognizable at the premiere party of her new show, 'The Slap,' leading many to think the star has undergone plastic surgery to alter her appearance.

Just two weeks ago, Uma looked fresh-faced at an event in NYC. But the mom-of-three's new look suggests she may have gotten Botox or other cosmetic procedures to make her skin look tighter and more refined since her last public outing.

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Uma on Jan. 28 (left) and on Feb. 9 (right). (Photo Credits: Getty Images)

Last October, Renée Zellweger similarly drew speculation that she had plastic surgery when she debuted a drastic new look at the ELLE Women In Hollywood Awards.

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"I'm glad folks think I look different! I'm living a different, happy, more fulfilling life, and I'm thrilled that perhaps it shows," the 45-year-old actress said in response to rumors that she had gone under the knife.

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Renée in 2011 (left) and in October 2015 (right). (Photo Credits: Getty Images)