Ryan Seacrest, Emma Stone, Ramy Youssef, Pentatonix

Media personality Ryan Seacrest; actors Emma Stone and Ramy Youssef ("Poor Things"); "GMA" Book Club December pick reveal; "GMA"'s 25 Days of Christmas continues with a chat and performance by Pentatonix; Deals and Steals: Gifts Galore with ABC e-commerce editor Tory Johnson.