Where can I buy Tiaras/Veils on the spot in NYC?

Hey Guys,

I have a makeup and hair trial on Dec. 12th with Oksana and Tarale...I just realized I would like to have a veil and tiara for the day, just to get an idea of how it would look...

So the question is, where can I go in NYC and buy this...like on the spot, no ordering, etc. I will probably be buying my headpieces when I order my dress but a good selection would be helpful...you never know!

Thanks!