"Young Sheldon" CBS spinoff "Georgie & Mandy's First Marriage" has uncanny similarities to real life for its stars.

In order for the show to work, Sheldon Cooper — whether it's Jim Parsons or Iain Armitage — can't be in the picture if Big Bang Theory lore counts.

At last, Young Sheldon Season 7 is available to binge. Hours ahead of the debut of the CBS sequel series Georgie & Mandy’s First Marriage (airing Thursday at 8/7c), all 14 episodes from Young Sheldon’s farewell run are now live on the Warner Bros.

Rachel Bay Jones won a Tony, an Emmy and a Grammy for playing the heartbreaking mother in “Dear Evan Hansen.” Now she’s a mother-in-law in “Georgie and Mandy’s First Marriage.”

The debut episode of Young Sheldon spinoff Georgie & Mandy's First Marriage will feature some familiar faces. Annie Potts, who played Connie Tucker, Sheldon and his siblings' Meemaw, and Zoe Perry, the actress behind Mary Cooper,

The Big Bang Theory universe is expanding again — while also returning to its sitcom roots — with Young Sheldon spinoff Georgie & Mandy’s First Marriage (premiering Thursday, Oct. 17 at 8/7c on CBS).