James Corden's upcoming guest on his popular Late Late Show segment, Carpool Karaoke, is by far the most mysterious.
CBS recently announced Sia will be the next to appear on it, on Monday, hours after the 2016 Grammys. The pop singer is known for being camera-shy and tends to hide her face behind wigs while performing.
"It could be anyone," Corden told E!'s Ryan Seacrest on the red carpet at the Grammys, regarding her Carpool Karaoke appearance. "It's just a chin really. I hope it's Sia. We're telling everyone it is."
The talk show host added that he hopes to recruit more celebs at the Grammys to appear on his show and is set to head there for a taping while the ceremony is still in progress.
What's better than a #CarpoolKaraoke preview featuring @Sia and @JKCorden?
? The Late Late Show (@latelateshow) February 12, 2016
Answer: Nothing. pic.twitter.com/KQKcAfim63
Meanwhile, Corden did some carpool karaoke with Justin Bieber while en route to the Grammys. The singer has taken part in the segment on The Late Late Show before.
Keeping it cool and moisturized on the way to @TheGrammys with @justinbieber. See more in tonight's #LateLateShow!https://t.co/WH69OXtPb2
? The Late Late Show (@latelateshow) February 16, 2016
So nice of @justinbieber to help James get to @TheGRAMMYs on time... and moisturize his t-zone. pic.twitter.com/D0bF3QF2Sp
? The Late Late Show (@latelateshow) February 16, 2016
Corden, a British actor, began hosting The Late Late Show last year, taking over for Craig Ferguson.
He recently revealed he was reluctant to accept the job and even turned it down twice.
Check out our coverage of everything Grammys.