The couple were erroneously reported to have split earlier this week but they looked very much together as they arrived hand-in-hand for their dinner date, reported Radar online.
Kiebler, 33, in her black belted coat and skinny trousers, smiled for the cameras outside the Grill Royal restaurant.
Clooney, 51, is in Germany to film "The Monuments Men".
They have been dating each-other for nearly two years.