Is Tara Sutaria also a star kid? How did she get a Dharma film?

Who exactly is she? Like I don't think she is from a film family.. so how did Karan Johar of all people cast her in his film? Doesn't he usually cast only star kids. There isn't any information on her family either, only that she has a twin sister who is a dancer.. Does anyone know if she is from a film family or what?