As if you need any other reason to go see Finding Nemo in 3D when it comes to theaters on September 14th other than the fact that it’s going to rock, Pixar has just sweetened the deal! Before the movie, a special short called PARTYSAURUS REX will air, featuring everyone’s favorite insecure T-Rex from the Toy Story franchise. In the short, Rex turns into a super stud after going in the bathtub with Bonnie (the little girl who adopted all of Andy’s toys). Take a peel at the awesome short, then head to theaters on September 14th to see Finding Nemo in 3D and the entire Partysaurus Rex short.