While Tuesday's guests remain a mystery, the show teased "a celebration" for the episode. On Wednesday, White House Press Secretary Sarah Huckabee Sanders will be by her father, former Arkansas governor Mike Huckabee, while Elisabeth Moss ("The Handmaid's Tale") and "Outlander" stars Sam Heughan and Caitriona Balfe will appear Thursday.
On Friday, there will be a performance from Toby Keith.
Additional guests announced for the month of September include Joe Scarborough and Mika Brzezinski ("Morning Joe"), tennis star Maria Sharapova, Larry David ("Curb Your Enthusiasm"), Terrence Howard ("Empire"), James Franco and Maggie Gyllenhaal ("The Deuce"), Kiefer Sutherland ("Designated Survivor"), Sofia Vergara ("Modern Family"), 50 Cent and Adam Scott and Craig Robinson ("Ghosted").
Candace Cameron Bure will also pop up with the cast of "Fuller House" and Whoopi will have an "epic 'Sister Act' 25th anniversary reunion."