As you might remember, earlier this year John Stamos made every '90s kid's dreams come true when he announced that Full House would be getting a spin-off.
But the big question: How much of the original cast will be back? So far we know that Bob Saget (Danny Tanner) and Dave Coulier (Joey Gladstone) have agreed to guest star alongside Stamos, who is also producing the series.
While Mary-Kate and Ashley Olsen are pretending that their invite to the reunion got lost in the mail.
But Stamos just confirmed on Instagram that one VERY important cast member is guest starring, too.