Bella Doña, a Latina-owned and L.A.-inspired brand, made its big-screen debut in the new “Mean Girls” movie. While the movie deals with high school drama, it features locally owned products such as a gray sweatshirt worn by Reneé Rapp that reads “Dramática.” The sweatshirt is from Bella Doña’s “Las Dramáticas Club” collection. “We were just both excited because we know …