And today, the episode of The Ellen DeGeneres show featuring the two holiday crooners finally aired!

Brit, 27, and Ellen, 50, traipse door-to-door in the clip, singing and decorating random people's homes. Several of the surprised residents, particularly the first woman they approached, seem...a little puzzled.

Ellen gamely works in a plug for Britney's new album, Circus, but the nonplussed homeowner still retains a "Yeah, so?" look on her face.

Check out the clip below, and be sure to watch till the end. The tuneful duo bust into an impromptu "Jingle Bells" rap in the middle of the street!

As always, hit up BritneySpears.com for up-to-the-minute info on the pop singer!