Jennifer Aniston [1] looked absolutely gorgeous when she attended Entertainment Weekly's PopFest to promote her new movie Office Christmas Party [2] on Sunday. Wearing a little black dress and suede boots [3], the actress was all smiles as she posed alongside her costars during the event. Aside from laughing at T.J. Miller's goofy faces, she also shared a sweet embrace with Olivia Munn on the gray carpet. See her sweet outing below.