OK then, I'll guess?
The apparent size of a full moon is inversely related to its distance. This year (2008) the closest approach of the Moon to the Earth occurs Dec 12 21:38 at a distance of 356567 km just four hours after full moon.
This Full Cold Moon aka Full Long Nights Moon will be closer "full moon look at its largest" than last years (2007) Full Hunter Moon on Oct 26 11:52 which was closest (356754 km) six hours later.
Incidentally, since the Earth will also be closer to the Sun expect very high tides.