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Oscar Party Pics

Lester Cohen, Kevin Winter, Michael Buckner/Getty Images

The Oscars may not be until tomorrow, but stars have been partying all week long!

Nominees like Anne Hathaway, Bradley Cooper, Jennifer Lawrence and Jessica Chastain have been hitting Hollywood's hottest bashes and soirees ahead of Sunday's big awards show.

Check out all the celebs we've spotted letting loose and having fun around town.