Whatever
Here is something that seems about as well thought out as the "New Coke", but maybe that's the idea:

She was born Madonna Louise Veronica Ciccone and has had many nicknames, including The Material Girl, but the entertainer, businesswoman, children's book author, wife and mother says she's ready for a new name: one reflecting her religious beliefs.

Madonna - who has for years been a believer in Kabbalah, a type of Jewish mysticism - says she has chosen the Hebrew name Esther.

Esther? OK, whatever. Madonna probably has the highest success to talent ratio of anyone ever, but I think she is running out of ideas. It might be a good idea to just slowly fade away at this point.