Lady Gaga is the undisputed queen of nail art. Some would say that she is responsible for bringing nail art into the public eye and making it as popular as it is today. She's a celebrity, and therefore has the amazing freedom to work with the best artists in the world. It's definitely a perk she takes full advantage of! Her "Born This Way" nails, and many other awesome looks, were created by NYC based artist Aya Fukuda, who is fantastic. Check out her website if you don't believe me.
barney's lady gaga nails collection
source; NAIL ART 101 and AYA FUKUDA NYC