Below you can see the front-view size comparison of the Leica D-Lux Typ 109 and Leica X Vario. The Leica D-Lux Typ 109 is clearly the smaller of the two cameras. Its body is 15mm narrower, 7 mm shorter and 40 mm thinner than the Leica X Vario.
The chart below depicts how two cameras compare with average dimensions of the cameras in their class.