George Clooney, best actor nominee for his role in "The Descendants," and his girlfriend Stacy Keibler on the Oscars red carpet Sunday. Reuters Reuters

Photographers were certainly very much alert during the 84th Annual Academy Awards. Everyone's getting ready to capture a photo of some of the biggest stars wearing their most elegant and stylish outfit.

The red carpet was sizzling hot as celebrities walked in displaying their amazing beauties. The audiences were getting their visions ready to witness striking and extraordinary looks of nominated stars at the Oscars.

Superstars usually arrive late at the Oscars to stun the crowd with their fashionable look. But George Clooney made a difference in this year's awards night. He came early Sunday night together with his girlfriend, Stacy Keibler.

Stacy has always been spotted escorting Clooney to a lot of award ceremonies conducted this year such as the SAG Awards and Golden Globes Awards. Recent awards night made the red carpet thing usual for her.

Keibler's look for the night has stunned the audience with her Oscar like figure. She's wearing a gold silk Grecian-style Marchesa dress, while Clooney came in well dressed with his Armani tux.

Clooney has been nominated for best actor award for his movie "The Descendants" in the 2012 84th Annual Academy Awards.

Other eye-catching stars with their amazing gowns walking on the red carpet include Jessica Chastain, Rooney Mara and Octavia Spencer. Michelle Williams' coral dress has also drawn so much attention from the viewers.

Best dressed celebrities never fail to create a buzz online.

Anni Mumolo, co-writer of "Bridesmaids," arrived with Kristen Wiig wearing Pamella Roland. She appeared simple, yet elegant with her teal dress that is styled with belt and a tiny train. Both were shortly interviewed on ABC's Red Carpet Show by Robin Roberts.