After being away from the public eye since November, Renee Zellweger was seen again on Wednesday night as she attended a charity event presented by The Painted Turtle and the UCSF Medical Center. The event, A Starry Evening of Music, Comedy & Surprises, was conducted at the Davies Symphony Hall in San Francisco. It was held to support The Painted Turtle camp for children with chronic medical conditions. Aside from Zellweger, celebrities Amber Riley, Josh Groban, Annette Bening, and Kathy Griffin also attended the event.

Zellweger stepped out wearing a sleek black dress, just a touch of make-up, and had her hair piled up in a messy bun. Entertainment news outfits commented that the 44-year-old actress, who is best known for her role as Bridget Jones, looked radiant and that her skin glowed. Others, however, wondered what Zellweger had done to her face. It appeared that she had some cosmetic work done, widening her eyes and making her lips look softer.

Good lord! What has poor Renee Zellweger done to her face!!! #reneezellweger #surgery #whoisthat pic.twitter.com/t0rMZIojnu

— Lawrence Whittaker (@LHWHITTAKER) March 14, 2014

Renee Zellweger’s face — entirely different all over again http://t.co/0rLvNvOikz

— Fishwrapper (@fishwrapped) March 12, 2014

It’s official, if you are a female celebrity over 40 you cannot win. Renee Zellweger proves it: http://t.co/jgzc4y2SoL #mmia

— Mamamia (@Mamamia) March 13, 2014

The Oscar winner has previously been criticized for cosmetically enhancing her appearance. In 2013, she got a lot of attention because of her face. People speculated she had been using too much Botox. The actress has not said anything about her new look, but photographs of her during Monday’s event show a noticeable difference from those taken of her during last year’s Oscars.

The last public appearance of the actress was last November when she attended the screening of Long Shot: The Kevin Laue Story in Burbank. Zellweger’s last movie was 2010’s My Own Love Song. The actress kept herself busy last year as the executive producer of the Cinnamon Girl drama series.

In addition to her support for The Painted Turtle, Zellweger was also involved in an HIV prevention campaign in 2005, working with Switzerland’s federal health department. In 2011, she became one of the patrons of The GREAT Initiative, a foundation focusing on gender equality. That same year, she collaborated with Tommy Hilfiger to design a bag to help raise awareness and money for the Breast Health Institute.

Image via Twitter