Following on from my post about glitter balloons... I found this image of plastic 'wine glass' style cups, with glitter on the bottom! You can get these cups from most supermarkets, and they'll be sure to give that extra specially Royal princess feel!
1. Coat the bottoms of the cups in PVA glue
2. Sprinkle glitter all over! Why not match the glitter colour with your princess' dress?
3. Leave to dry