<br /> Chilling Adventures of Sabrina” will will feature a flashback to Sabrina Spellman’s childhood on the Netflix series’ upcoming holiday episode.<br />Mckenna Grace will guest star as Li’l Sabrina on the show’s upcoming holiday episode, “Chilling Adventures of Sabrina: A Midwinter’s Tale.”<br />According to TheWrap, Grace was selected by Kiernan Shipka, the titular character, herself.<br />[Kiernan] texted me a picture of her with McKenna and said, ‘You have to get Mckenna. <br />