RELATED Why the Olsen Twins Won't Be in WandaVision Decades before WandaVision was riffing on popular sitcoms though the Scarlet Witch's magic in Westview, Elizabeth Olsen's older sisters, twins Mary Kate and Ashley Olsen, were themselves part of an actual hit sitcom, Full HouseFrom , the two sisters jointly played the role of Michelle Tanner, the youngest of the three TannerWhile fashion designers and former child stars MaryKate and Ashley Olsen and WandaVision star Elizabeth Olsen are famous names, the Olsen family tree is much wider than that That's right There are even more Olsen siblings than you already knew about Read on to find out what MaryKate, Ashley, and Elizabeth's brothers and sister are up to, and for more on celebrity siblings who opted for aPeople are only just realising that Wandavision star Elizabeth Olsen is related to MaryKate and Ashley and they're "mindblown" The former child stars, 34, are best known for appearing in the Q Tbn ...