Re: Snow and Regina sisters? Home › Forums › Once Upon a Time › Season One › 1×17 "Hat Trick" › Snow and Regina sisters? › Re: Snow and Regina sisters? March 30, 2012 at 4:06 am #140330 LisaFromOHParticipant My first reaction to that theory was, “Oh, cool.” Then I remembered that Regina married Snow’s father, which would be her own stepfather, if this theory is correct. That would be gross, but still possible. [adrotate group="5"]