Hirosue was born in Kochi, Kochi Prefecture, Japan. Hirosue joined the "P&G" cosmetic model competition at 14 and made her television debut the following year singing on the program at 18 ,TK Music Camp.She made her television drama debut in 1995 with Fuji TV's Heart ni S and is well known for her work as a spokesmodel for NTT DoCoMo. She studied in Waseda University but did not graduate.
About a month after recording an Asahi Soft Drinks commercial for Mitsuya soda in 1997, Hirosue got glasses. She could see the Mitsuya commercial in her then-new glasses.
Hirosue was married to Takahiro Okazawa on the 17th of January in 2004 and has delivered a baby boy on the 10th April, 2004. They divorced on March 2008.