All Grown Up! is an American animated television series, the eighteenth major Nicktoon, and a sequel series to Rugrats, produced by Klasky Csupo. This is also the first Nicktoon to be a follow-up to an earlier Nicktoon. The series revolves around the lives of the Rugrats, ten years after the events of the original series. It premiered on April 12, 2003 (just a day after Jimmy Neutron's Nicktoon Blast opened at Universal Studios Florida) as a preview before starting its regular run in late…