Apart from Anne Hathaway's nip moment at the Academy Awards, another celebrity caused a Twitter debate. Renee Zellweger appeared on the Oscars stage last Sunday looking all smooth in the face, not a wrinkle is in sight.

At 43, it's to be expected to see some visible signs of aging but Renee Zellweger appeared looking more "wrinkle free" than she did 10 years ago. What's the secret? Botox. Her incredibly smooth face has caused fans to debate on Twitter and other social networking sites that Rene may have overdone it.

Renee appeared on stage together with Catherine Zeta-Jones, Richard Gere and Queen Latifah to present an award that night. For the joyous moment on stage, Renee looks like she's having a hard time smiling and grinning while appearing "too stretched" on the face.

Apart from the thousands and millions of Twitter users who tuned in for the Oscars on Sunday, "Modern Family" actor Jesse Tyler Ferguson tweeted his reaction about Renee's Botox face.

"Renee Zellweger arrives as a Ghost of Christmas Future for Jennifer Lawrence, bearing warning about Botox. #Oscars2013 " he said.

Botox has long been used by Hollywood actors and actresses to erase the signs of aging. Since they work in a business where good looks is a priority, some stars have resorted to Botox for a quick face fix.

There are other celebrities like Nicole Kidman, Jennifer Aniston and Kelly Ripa who admitted that they have tried the procedure. But although the results can work as a temporary solution, Botox is still considered quite an embarrassment in Hollywood.

Browse through the slideshow and see other Hollywood celebrities who have tried Botox.

Renee Zellweger's 'Botox Face' at the Oscars

Botox has its risks and side effects.

The intensely private Nicole Kidman has somehow opened up in an interview with WHO magazine about the depression that she experienced after her failed marriage to the famous Hollywood actor.

Jennifer Aniston thinks her behind is way too big for her frame.

When Elton John tore apart Madonna in an interview with an Australian paper earlier this month fans all over the world knew it was only a matter of time before the pop star responded. Earlier this week Madonna told a concert audience she “forgave” John, who criticized her only after Madonna trashed Lady Gaga. Since the flap began fans have started wondering if Madonna, who has seen her fame decline since her peak, is jealous of Lady Gaga.

Australian pop sensation Kylie Minogue has alerted police about threating messages she has been receiving from a stalker on Twitter.

Demi Moore

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