Was surfing the net and stumbles on this site selling these temporary body glitter tattoo's, they look really different and they say they last anywhere from 5-7 days. Has anyone tried them? I think they would be a hit for the summer but don't want to buy into it if they don't actually work. Thanks for any feed back. The site by the way is www.glitterbodyart.co.uk if anyone wants to check it out!