Article continues below advertisementGeorge Clooney may be at the top of his game in the acting world, but the movie star admitted he has a lot to learn when it comes to raising his and wife Amal's 8-year-old twins, Ella and Alexander.Fortunately, the Oscar winner has pal Julia Roberts to turn to for advice.Article continues below advertisementGeorge and Amal Clooney Struggle With Kids' Screen TimeSource: megaAmal and George Clooney admitted they 'worry' about their twins and social media.