Jo! Where's your favourite place to buy g-strings? z
I make mine! But I love stripper stores, online and elsewhere. You can buy ANY g-string and decorate with wih rhinestones or fringe, or even add hooks on the sides to make it breakaway. Just remember that if you add fringe and the fringe doesn't stretch, you need to make sure you can get the garment on and off over your hips before you do your final stitching!
Here's a great base for a decorated g-string: