Martha Stewart Weddings magazine had a whole Tiffany wedding in the last one. You can probably still buy it. Website It might be on their website as well! Also, here''s some blue weddings. Look for some Knottie Bios I am sure there are some there as well. http://www.theknot.com/keywords/sc_619_528.shtml
I had a Tiffany Blue wedding - sortof. I found that true tiffany blue looks a lot more like sea green when it''s in large quanities (like on a bridesmaid). I highly suggest going with a more robin''s egg blue or a light teal - it''s much easier to match. We did a lot of touches with ribbon and simple bows, also. Do a google search for Toni Braxton''s wedding cake - mine was not as elaborate, but we did a square cake with ribbon trim (I did a white cake though with blue ribbon as to not be sortof obvious about the tiffany thing). I used Jean M to find a light teal blue invite with white writing - myjeanm.com - there are lots of simple options with ribbon, too.