Making the Wig, Tiara
There are so many bridal shops, haberdasheries and craft shops that now sell very affordable Tiaras, this will be down to personal taste, just don't buy one that's too big.
The necklace was bought from Debenhams, we tried to choose something similar to the original.
The wig was bought from America http://www.thehistoricalhairdresser.com made as a Giselle style wig, the colour was Auburn. We decorated it with small flowers and butterflies.