Gulu Gulu, the upcoming Tamil film starring actor Santhanam in the lead role, is set to release on July 29 theatrically, the makers announced on social media on Friday. Directed by Rathna Kumar, who has previously directed Meyaadha Maan and Aadai, Gulu Gulu also stars George Maryan, Dheena, Namita Krishnamurthy, Athulya Chandra, along with a host of newbies.