Olivia Munn has a ball while Jennifer Aniston has had enough in new Office Christmas Party character posters

There's always one pooper at the Office Christmas Party.

And by the looks of the new character posters released on Saturday, it's Jennifer Aniston.

While the hooley rages around her, the 47-year-old is clearly having none of it.

Enough: Jennifer Aniston did not look like she was into the Office Christmas Party in the new character posters

Wearing a fur lined fitted jacket and an icy cold stare, neither the anthropomorphic reindeer nor sheep flanking her seem to be impressing her.

Olivia Munn on the other hand appears to be the life and soul of the shindig.

Wearing a huge snowman costume - including snowy scarf, mittens and top hat - she looks like she is about to pull a trust fall into some very willing colleagues' arms.

Their co-stars Kate McKinnon and Rob Corddry meanwhile share a poster, and appear at first look to be about to kick a fight off.

Let it snow: Olivia Munn on the other hand appears to be the life and soul of the shindig

But a closer look - and a closer look at the title of the movie - suggests the duo are actually about to hook up, as the SNL staple wraps a leg around him and takes a grip of his tie.

The final poster is reserved for Jason Bateman, who as always maintains that smug Jason Bateman look as he calmly watches the action unfold with a beer held aloft.

The new trailer released the same day revealed Aniston plays a domineering CEO looking to shutter a branch of the company run by her brother Clay, played by Silicon Valley star T.J. Miller.

Let's get it on: Their co-stars Kate McKinnon and Rob Corddry meanwhile share a poster, and appear at first look to be about to kick a fight off

After charging into her brother's office she threatens to cancel the company Christmas party - and close the branch - unless Clay and his team, including his chief technical officer Josh (Jason Bateman) and Mary (Kate McKinnon), can obtain the business of Walter Davis, played by Courtney B. Vance, the Emmy-winning star of The People v. O.J. Simpson: American Crime Story. 

'If by some miracle you can close Walter Davis and his $14 million account,' she declares, 'your jobs are safe.'

The call to action inspires Clay to go over-the-top with the Yuletide bash in an attempt to go all-out in hopes of impressing their client Davis. 

The film also stars Gotham's Jaime Chung and The Interview's Randall Park. Office Christmas Party hits theaters December 9.

Bateman: The final poster is reserved for Jason Bateman, who as always maintains that smug Jason Bateman look as he calmly watches the action unfold with a beer held aloft

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