The duo drove through the rain in London while Adele sung her hit Hello for the talk show host. They also discussed how Adele goes about getting a reservation and her friendship with Beyonce.
2. Iggy Azalea
Corden convinced the star to get out of the car and go wedding dress shopping with him. The duo bought the dresses and then proceeded to drive to the studio covered in white frills and lace.
3. Jennifer Hudson
The star took things a step further, signing her hit Spotlight out of the car to a bus full of people.
4. Mariah Carey
Carey proved she was not only a great singer but also great with accents.
5. Justin Bieber
Bieber showed audiences he wasn't shy and belted out a few of his original hits, which he produced at the tender age of 15.