The Black Eyed Peas singer is said to have requested her legal name be changed from Stacy Ann Ferguson to Fergie Duhamel, taking account of her stage name and her husband Josh Duhamel's surname.
According to TMZ, the star will have to publish a notice in her local newspaper for four consecutive weeks in order for the change to be processed.
Fergie married Transformers star Josh back in a 2009 ceremony at the Church Estates Vineyard in Malibu, California, in front of a star-studded crowd that included will.i.am, Kate Hudson and Stacy Keibler.
The couple announced their first pregnancy earlier this year, but have so far kept tight-lipped on whether they will be welcoming a boy or a girl.
Yesterday, Fergie, 38, was snapped heading to the Beverly Centre in LA, wearing her trademark leather trousers and a loose T-shirt that covered her bump.
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