I've never seen commercial fabric spray paint, but I found an idea in Family Fun magazine (June/July 2011) where you can make your own. Mix 3 parts fabric paint to two parts warm water in a spray bottle and shake to mix. Slip a piece of cardboard inside a pre-washed t-shirt to prevent paint from bleeding through to the other side. They suggested using a design cut out of Con-Tact paper. Firmly adhere to the t-shirt, especially at the edges, and smooth out all wrinkles. Spray the paint onto the fabric all around the cutout. A light spray is less likely to seep under the stencil. When the paint is dry, remove the Con-Tact paper stencil and the cardboard, then set the paint according to the label directions.



I haven't tried it yet but would like to see how it turns out. :)