Jimmy Kimmel launched a new segment on Jimmy Kimmel Live called “Undercover Sing” and Christina Aguilera was the first celebrity to take part.
The theater where Jimmy shoots his show is on Hollywood Boulevard across the street from the Hollywood and Highland shopping center.

There are a lot of shops there along with a ton of tourists so Kimmel wanted to give people visiting a real celebrity experience.
He set up hidden cameras at Randy’s Donuts and enlisted Aguilera to sing live over the speakers as the people waited for donuts.

Watch it all go down with Christina Aguilera in the video below.
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