She opened up to Ellen about the making of her new album, being more vulnerable, and how she creates.
Katy brought a surprise guest with her: John Mayer! The two talked with Ellen about their video together.
The pop superstar opened up on her relationship with the very charming John Mayer.
Ellen asked her friend and guest DJ Ellie Kemper to head to the mall and help out with the gift wrapping! You don't want to miss this.
With Christmas just around the corner, Amy Adams brought Ellen some childhood photos so they could review some happy holiday memories.
Ellen helped her audience members with the things that have got them stressed this holiday season.
Ellen's co-host was ready to help in the segment that's changing lives all over the world.
Ellen and co-host Julia Roberts reviewed some reviews you'll just have to see to believe.
The Pretty Woman herself dropped by to co-host with Ellen for the entire hour. The two had some catching up to do.
She had a house full of women to help her demonstrate; Ellen, Julia Roberts and Julia Louis-Dreyfus! See how the crafting went, right here.
The lottery jackpot is sky high, and Ellen had a special surprise for her audience to celebrate.
Ellen had a special toy tester help her check out the best toys of the season. See which ones they chose!
Who will win? Who will lose? See what Terry Bradshaw had to tell Ellen!
Their hit is tearing up the charts, so what better game for Swedish duo Icona Pop to play with Ellen than "I Don't Care/I Love It?" Enjoy!
He opened up about his surprising and beautiful relationship with the iconic actress.