Tegan and Sara found twins Railey and Seazynn Gilliland on TikTok to play their teenaged counterparts in IMDb TV series March 26, 2022 Cirrkus Pop duo Tegan and Sara turned to TikTok to cast their teenaged counterparts and Railey and Seazynn Gilliland will play them in an upcoming IMDb TV series and Canadian Icon Cobie Smulders will play their mom Share This Article