Gwen Stefani, George Clooney And Julia Roberts Appeared On Carpool Karaoke Last Night

James Corden just upped his game with the latest instalment of Carpool Karaoke.

Gwen Stefani was scheduled to appear on The Late Late Show segment last night, which would be impressive enough, but then George Clooney and Julia Roberts also made a surprise appearance for a rendition of 'Hollaback Girl'.

Enjoy it above.

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