In advance of "A Pentatonix Christmas Special," NBC shares promotional photos of the five Pentatonix members.

Last month, NBC confirmed that superstar a capella group Pentatonix would receive its first holiday special.

Entitled “A Pentatonix Christmas,” the broadcast airs at 8PM ET/PT on December 14.

In addition to performances by the group itself, the special will feature guests like Kelly Clarkson and Reba.

To promote the upcoming television event, NBC shared new promotional photos of the five Pentatonix members. Those follow:

A PENTATONIX CHRISTMAS SPECIAL -- Season: 1 -- Pictured: Kirstin Maldonado -- (Photo by: Chris Haston/NBC)

A PENTATONIX CHRISTMAS SPECIAL — Season: 1 — Pictured: Kirstin Maldonado — (Photo by: Chris Haston/NBC)

A PENTATONIX CHRISTMAS SPECIAL -- Season: 1 -- Pictured: Avi Kaplan -- (Photo by: Chris Haston/NBC)

A PENTATONIX CHRISTMAS SPECIAL — Season: 1 — Pictured: Avi Kaplan — (Photo by: Chris Haston/NBC)

A PENTATONIX CHRISTMAS SPECIAL -- Season: 1 -- Pictured: Mitch Grassi -- (Photo by: Chris Haston/NBC)

A PENTATONIX CHRISTMAS SPECIAL — Season: 1 — Pictured: Mitch Grassi — (Photo by: Chris Haston/NBC)

A PENTATONIX CHRISTMAS SPECIAL -- Season: 1 -- Pictured: Kevin "K.O." Olusola -- (Photo by: Chris Haston/NBC)

A PENTATONIX CHRISTMAS SPECIAL — Season: 1 — Pictured: Kevin “K.O.” Olusola — (Photo by: Chris Haston/NBC)

A PENTATONIX CHRISTMAS SPECIAL -- Season: 1 -- Pictured: Scott Hoying -- (Photo by: Chris Haston/NBC)

A PENTATONIX CHRISTMAS SPECIAL — Season: 1 — Pictured: Scott Hoying — (Photo by: Chris Haston/NBC)