It's Hollywood's biggest night -- which means we have LOADS of pics of all the biggest stars at the 84th Annual Academy Awards!

From George Clooney to Michelle Williams to Rooney Mara, we've got pictures of all of the most stunning stars. Check out all of the amazing styles on the 2012 Oscars red carpet!

Click on all the pics below and get a closer look of all the hottest looks!

Michelle Williams, George Clooney & Stacy Keibler, and Rooney Mara at the 2012 Academy Awards

Who do you think is best dressed tonight??

Photos Courtesy of Getty