even got a little flirty with the 36-year-old host
when he asked her how many No. 1 hits she had (she has 18). "You're so hot. Stop it," Corden said when she took off her sunglasses and gave him a sultry smirk. "I'm a married man. You've gotta stop what you're doing, cause I know exactly what you're doing. Oh my goodness. I can read you like a book."
Sadly, Corden and Carey did not cover "All I Want For Christmas Is You," but ET has a flashback of when we were on set of the music video. Check it out, below.