INTERWEBS: MAKING LIFE BETTER SINCE AL GORE INVENTED THEM >>>
In the Philippines they associate roundness with coins and wealth, so to insure the coming year is a prosperous one, on New Year’s Eve they like to surround themselves with round stuff. People dress in outfits covered with circular patterns, like Polka dots, and eat 13 round fruits, for good fortune.
I also like to think that J-Lo has a special reverence on this holiday, although maybe that's just in my household.