Michael Buble is giving beliebers a Christmas gift this year. That's right, ladies -- Justin Bieber (who Buble poked fun at in his 'Hollywood' video) will appear on NBC's 'A Michael Buble Christmas.'

The special will be an hour long, featuring both music and comedy -- both of Buble's passions. Bieber will join fellow Canadian Buble, as well as guests Kellie Pickler, Thalia and actor Ed Helms on the holiday variety show, airing Tuesday, Dec. 6.

The show should be an awesome promotional tool for both Buble's 'Christmas' album (it's No. 1 in the U.K. and in the U.S.!) and Bieber's 'Under the Mistletoe,' which currently rests at No. 2.

The special won't be the first time Bieber and Buble spread holiday cheer on NBC -- it will just be the first time they do it together. Bieber serenaded fans with Christmas tunes on the 'Today' show last week, while Buble will performed at the Rockefeller Center tree lighting ceremony.

Watch a Preview of  'A Michael Buble Christmas' Special