Gabriel Iglesias promotes his comedy tour "Don't Worry Be Fluffy."

Ariana Madix discusses competing on "Dancing With the Stars."

Jennifer spotlights 14-year-old singer Reid Wilson from Montgomery, Alabama,who recently started posting singing videos on social media but has already caught the attention of millions. Reid will perform and chat with Jennifer.

Grammy Award-winning artist, "Queen of Christmas," and icon Mariah Carey stops by as part of the show's "Legends" series. Mariah will discuss her "Merry Christmas One and All!" tour.