The Grammy winner's representative confirmed the name change on Friday.
Fergie is a member of the Black Eyed Peas. She released her solo debut, The Dutchess, in 2006.
It launched five big hits, including Fergalicious and Big Girls Don't Cry.
The 38-year-old singer is married to 40-year-old actor Josh Duhamel. She is pregnant with their first child.
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Spending time with family will help relieve stress. It's comforting to be surrounded by those who understand your quirks. In your public life, you feel like you always have to explain yourself to colleagues. This becomes incredibly draining. To add insult to injury, you've had difficulty finding an appropriate job for your level of expertise. Instead of holding out for the perfect opportunity, you should take a low level job that yields regular pay.More