Today is the official start of summer and what better way to celebrate than getting excited for outdoor movie season. Williamsburg’s SummerScreen just released some colorful and spacey iterations of movie posters to go along with this year’s series, which kicks off July 5. Seven local artists created the posters for each film that will show in McCarren Park: Mean Girls, Office Space, Donnie Darko, Selena, I Know What You Did Last Summer and an audience choice. So fetch.