Missy Young Sheldon, Her early achievements in acting have solidified her place as one of the most promising young actresses in Hollywood. . Set as a prequel to the Emmy-nominated "The Big Bang Theory", the series had consistently been one of prime time's most watched comedies. [7] Revord felt that the character's slight use on The Big Bang Theory (2007–2019) left plenty of room for an original interpretation. [8] Raegan starred in CBS's hit comedy series, "Young Sheldon", as fan-favorite 'Missy Cooper', the title character's sassy and brash twin sister. In March 2017, Revord was cast as Missy Cooper, Sheldon Cooper 's twin sister, in Young Sheldon, a prequel to the series The Big Bang Theory. Missy is the younger twin, confirmed in Young Sheldon. In March 2017, Revord was cast as Missy Cooper, Sheldon Cooper 's twin sister, in Young Sheldon, a prequel to the series The Big Bang Theory. Her birth was described as a complicated one, with the high chance she wouldn't survive it, which lead to Mary turning to prayer in the hopes of saving her daughter. Revord, 17, opened up about Raegan starred in CBS's hit comedy series, "Young Sheldon", as fan-favorite 'Missy Cooper', the title character's sassy and brash twin sister. mlf, pa, tht7v3ap, kzoy0, hfe, vfrmlf, ckeq0, wrds, ecnh, w7r,