Ariana Greenblatt: Ariana Greenblatt. Actress: Barbie. Ariana Greenblatt is one of the busiest young actresses in Hollywood. At age 11, only a few short years into her career, she was already named as one of The Hollywood Reporter's 'Top Stars Under 18 To Watch' in 2019. Now at 15-years-old, Greenblatt's expansive film and television slate has most recently landed her on IMDB's "Top Stars To Watch in 2023" and honored as part...