Unfortunately, the only person - worldwide - to have considered creating domain names with an extension ending with her name, DOES NOT USE IT.
Mr Richard Li Tzar Kai, a Hong Kong businessman and philanthropist, created the ".richardli" domain name extension but no domain name has been created yet, but one redirection. When you click on http://nic.richardli, you will notice that it works but it redirects to another website.
If I can understand the move to protect some finance personality's name, I don't understand why superstars with a big ego have missed the opportunity to apply for their family or complete name as a domain name extension.
Securing a superstar's name as a Trademark is common. Some even spend outrageous amounts of money acquiring and registering domain names to protect the name of their child so...isn't it time to consider the next round of the ICANN new gTLD program to create a serious and unique buzz?
What about a ".kardashian" domain name extension for a www.kim.kardashian ? Or will it be a www.music.beyoncé ?