Mary-Kate Olsen and Ashley Olsen are famous for, among other things, being twins — but the pair also share four additional siblings. Mary-Kate and Ashley are the daughters of Jarnette and Dave Olsen.

Mary-Kate and Ashley Olsen made a rare appearance at the wedding of their brother, Trent Olsen, after disappearing from the spotlight to focus on their fashion line, The Row. See details.

Add Yahoo as a preferred source to see more of our stories on Google. NEW YORK, NEW YORK - MAY 06: Mary-Kate Olsen and Ashley Olsen attend The 2019 Met Gala Celebrating Camp: Notes on Fashion at ...

After all, Mary-Kate Olsen and Ashley Olsen recently made a rare public appearance to support their older brother as he tied the knot with Alexis Armistead in Hollywood Hills. Mary-Kate and Ashley, ...