Black Eyed Peas singer Fergie's real name isn't Fergie -- it's actually Stacy Ann Ferguson, but she's filed paperwork to legally change it to Fergie Duhamel.

That would mean she's not only adopting her nickname as her legal first name, but also taking husband Josh Duhamel's surname.

The documents filed in L.A. state she wants to change her name to "conform to the first name which she is commonly and professionally known as, and has been for many years."

The pregnant pop star's next step in making this legal is to publish a notice in the local newspaper for the month preceding her hearing on August 16. (We guess renting a billboard isn't in compliance with the law.)

Hey, if Metta World Peace got his chosen name, why shouldn't she?

More From KSSM-FM