Zack Sharf Digital News Director Now that “Barbie” has officially crossed the $1 billion mark at the worldwide box office, speculation about a potential sequel has intensified tenfold. Greta Gerwig, who directed “Barbie” in addition to co-writing its script with Noah Baumbach, told The New York Times she has no ideas yet for a “Barbie 2.” However, she also told People magazine before the film joined the $1 billion club that she hoped her movie “is the launch of a world and a bunch of different Barbie movies.” “There’s a tone and a humor and a joy, and obviously the world is so beautiful,” Gerwig told the publication. “I want to go back to Barbie Land.” Margot Robbie was less assertive when asked about a “Barbie” sequel in pre-release interviews.