Warner Bros. Pictures announced the release date for the long-anticipated Greta Gerwig Barbie movie starring Margot Robbie and included a picture of Robbie in character as the iconic doll in a pink convertible. The movie will be hitting theaters next summer on July 21, 2023. Some fans of Gerwig, who is known for penning indie comedy-dramas films such as Frances Ha and her acclaimed directorial debut Lady Bird, were shocked to hear that her next project as director after 2019’s Little Women would be a Barbie adaptation. Surely, however, Gerwig and her co-writer, partner, and frequent collaborat…