If you're already looking forward to the holidays, then you're in luck. The trailer for Office Christmas Party is here, and it's the ultimate gift. When a company's CEO tries to shut down her brother's branch, he and his co-workers must come together to throw the party of the year in an effort to impress a potential client and save their jobs. Not only does the film look like a ball of fun, but it also features some of your favorite celebrities. From the lovely Jennifer Aniston to wise-cracking Kate McKinnon, we can already tell this Christmas is going to be one jolly holiday. You can catch the film when it hits theaters Dec. 9.