A little early for breakfast (7 p.m. last night), a two-alarm fire broke out at 360 Post on Union Square, otherwise known as the Tiffany's building, whose upper floors are home to various office and doctor-type tenants. The fire is said to have been in the basement of the eleven-story building and was contained within a half hour. No word on how many little robin's egg blue boxes were destroyed, or how long Tiffany's might need to be closed.