STAGE TUBE: Jennifer Hudson and Michael Buble Sing 'Baby It's Cold Outside'

Former ``American Idol' contestant and Oscar-winner Jennifer Hudson (``Dreamgirls') headed back to her hometown of Chicago for her first TV special.

The singer performed Christmas songs at her childhood church and the music academy she attended; she also visited with family members and childhood friends.

Grammy-winner Michael Bublé joins Hudson to perform duets of ``Baby It's Cold Outside' and ``Let It Snow.'