Hi there,
I received the wilton gumpaste flowers kit and I was wondering what kind of wire to use on these flowers? Where can I buy this wire?

Use floral wire, which you can buy at Walmart in the aisle with the fake plant stems and glass marbles and stuff like that, or at the craft store.

I found using 22 or 24 guage floral wire to be the best especially if your are going to bend and form the petals and leaves

See also:

http://www.cakecentral.com/cake-decorating-ftopicp-6664079.html#6664079

HTH