just make sure you don't put the rear plate on the front, because peopel will laugh at you. In Italy, the rear licence plate is the full size euro plate, while the front licence plate is slightly shorter by a few inches wide.
The front licence plate does not completely fill up the european bumper indentation, because some countries such as england use the rear size euro plate for the front of the car too.
ive seen people put the rear plate on the front of their cars here in ontario and were laughed at.