Rihanna & Chris Brown Reunite for Thanksgiving

This year Rihanna is thankful for Chris Brown -- at least that's the way it looked last night on Thanksgiving ... when the two were photographed partying it up at the same German nightclub.

While the rest of America was stuffing its gullet with turkey and cranberry sauce, Brown and Rihanna hit up Berlin's Adagio nightclub after Brown's "Up Close and Personal" show.