Hailee Steinfeld and husband Josh Allen's infant daughter already has her own cheering section. "Cha Cha officially clocked in!!!💕," Hailee's mom, Cheri Steinfeld, wrote via an Instagram comment on Thursday, April 2, seemingly revealing her grandparent nickname. The Sinners actress' dad, Peter Steinfeld, echoed his wife's comments, replying, "Pop Pop officially clocked in!!😊❤️." Hailee's brother, Griffin Steinfeld, also sent his best wishes to his baby niece.