She's got a Columbia degree, her own preppy fashion line, a couple of horses, and - oh - the most recognizable last name in the country. Her grandpa, David Rockefeller Sr., is on Forbes' billionaire list and her grandma, Abby Aldrich Rockefeller, invested in the quaint little startup MoMA by donating her nine-story brownstone mansion. Needless to say, Ariana's got an invite to any soiree the museum throws in the halls her fam used to inhabit.