Gwen Stefani, Mystery Guests To Join James Corden On Carpool Karaoke

LOS ANGELES (CBS) -- Pop star Gwen Stefani is making a very special appearance on "Carpool Karaoke" on "The Late Late Show with James Corden" tonight.

But the real question is -- who's in the backseat?

Corden picked up two mystery guests for the newest installment of his hit segment -- but the identities won't be revealed until tonight's show.

???? Who could it be?? #LateLateShow pic.twitter.com/U9DZWvLIPk
— The Late Late Show with James Corden (@latelateshow) May 4, 2016

???????????? RT @latelateshow: You want a preview of our #CarpoolKaraoke with @gwenstefani? BOOM. https://t.co/2npqWtWhCi
— Gwen Stefani (@gwenstefani) May 3, 2016

Be sure to tune in on CBS tonight for the full reveal!

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