It’s over! Emily Ratajkowski has officially filed for divorce from husband Sebastian Bear-McClard. On Aug. 30, the model, 31, was seen moving her belongings out of their NYC apartment amid allegations that the film producer, 41, cheated with several women during their four-year marriage. “Emily is hoping to get this over and done with so that she can move on,” says a source. “But Sebastian is dragging his feet and being stingy with his money.” According to reports, the divorce is being contested, which means the estranged couple, who share 1-year-old son Sylvester, still have a lot of issues to iron out. “Emily was a dedicated wife and mother, and Sebastian ultimately betrayed her,” adds the source. “She’s not going to be timid about insisting on her share of their…