Vera Wang - lavender grosgrain sash

The Vera Wang 2009 Fall bridal collection included several dresses with a thick lavender grosgrain sash. None of these dresses were right for me (or my budget), but I did fall in love with the color of the grosgrain sash. (I briefly though the dress of my dreams was a Vera Wang dress by the way).  Our wedding colors are lavender and navy and I love sashes and bows - so it is no surprise I fell in love.  See it on the dress below. 

Vera Wang dress, photo from Maurice Ramirez Photography

So now comes the question - how do I find this color grosgrain ribbon online?  I want to use it in the reception decor (around baskets, candles, etc).  It has proven difficult to find the right color - sort of a grey/blue based lavender instead of a red based lavender.  Worse comes to worse, I am going to Britex this Saturday so I can check out their massive ribbon selection (although they aren't the cheapest option).  

Any favorite online ribbon resources?