Is that you, Uma Thurman?! The 44-year-old "Kill Bill" actress shocked the world on Monday after she stepped out with a drastically altered appearance. During the premiere of her new NBC miniseries, "The Slap" on Feb. 9 in the Big Apple, Thurman suspiciously looked different.

Social media lit up with criticisms over Uma Thurman's new look. According to The Daily Mail, the "Pulp Fiction" actress was barely recognizable when she walked down a red carpet premiere in New York City on Monday. She grabbed major attention as she was photographed with a "smooth forehead and puffy face with an extremely tight smile."

Last year, actress Renee Zellweger also caused some buzz over her transformed face during an appearance at an awards show. Now, Uma Thurman is making headlines and faces similar reactions. Speculations widely spread about Thurman undergoing cosmetic surgery.

Though Thurman has never spoken about having any plastic surgery or Botox, social media was quick to judge she underwent cosmetic enhancement. After the images first surfaced, E! News said fans promptly commented that the star looked different, perhaps due to her nearly fresh-faced appearance.

At the event, Uma Thurman did not wear any mascara and failed to highlight her pretty blue eyes. She just had rocking bold, filled-in eyebrows that look to be slightly bleached while sporting bold lips and skin-smoothing foundation. Additionally, Uma ditched her typical bangs and wore her glossy hair slicked back.

Thurman's appearance exploded Twitterverse with reactions. Unfortunately, several negative comments emerged about the actress' unrecognizable appearance, Hollywood Life reported. While she opted for a very minimal make-up, social media users accused her of enhancing her beauty through plastic surgery.

"First Renee now Uma - what is the new plastic surgery hitting tinsel town? #UmaThurman #FaceTransplant #FaceOFF #plasticsurgery #THEYLIVE," one user tweeted. While another wrote, "What has she done? I don't understand. Why? Is it necessary a beauty canon? I don't think! #UmaThurman #Hollywood."  

Meanwhile, in the world of entertainment, celebrities are often the target of harsh criticisms over their physical appearance. And Uma Thurman is no exception. Though a remarkable actress, Time cited the cosmetic surgery allegations just proved how limited the options of the celebrities are.

Do you think Uma Thurman underwent plastic surgery? Or are the social media reactions just a product of the society's obsession about aging?