Meh.
The comet we saw while we were cruising back home on the USS PELELIU through the Indian Ocean in '95 was bigger.
Place your palms together, put them over your head and open your arms about 3.5 feet.
That was how big that comet was. I learned years later that it had some Japanese name starting with the letter, "H." But I called it my Birthday Comet since that's when it arrived.
Comet Hyakutake
http://www2.jpl.nasa.gov/comet/hyakutake/
and for lots of images
http://www2.jpl.nasa.gov/comet/hyakutake/images.html