<P> Chelsea Brady is a fictional character on the NBC Soap Opera Days of Our Lives . Created by head writer Sally Sussman Morina, the role was originally played by Mandy Musgrave . The role was recast with Rachel Melvin in 2005 . Melvin portrayed the character from 2005 to 2009, after the character moves to London to take care of her mother, Billie Reed . She is the child of Bo Brady and Billie Reed . Chelsea is born by the name of Georgia Reed Brady . "Georgia" is presumed dead, and buried in a bayou in Louisiana . In 2005 after Chelsea Benson's parents are killed in a car accident, DNA tests show that she is Georgia Reed Brady . </P> <P> Chelsea Brady is born onscreen as Georgia Reed Brady on May 22, 1998, in Louisiana . Chelsea is the long - lost daughter of Billie Reed and Bo Brady, who is initially buried in the bayou as Georgia Reed Brady in May 1998 . The truth comes out when Chelsea's illegally adoptive parents are killed in a car accident and blood tests reveal her true lineage . Billie immediately steps in to care for Chelsea . Since 2006, Chelsea changes her last name to Brady, her biological father's last name . </P> <P> As Abby Deveraux's best friend, Chelsea is a bad influence . She encourages Abby to smoke, drink, and lie often to her mother . She also has a few driving incidents, including having her license revoked . Of course, the most serious accident results in the death of Zack Brady--her half - brother, whom she hits while she is text messaging and driving simultaneously, thus incurring the wrath of Hope Brady and half - brother Shawn Brady . </P> <P> Chelsea is involved with Max Brady, who keeps Chelsea's secret about accidentally killing Zack . Chelsea is also obsessed with older men including Patrick Lockhart, who is conveniently staying at Abby's house . Seeing Billie Reed as her biggest competition, Chelsea hates her, that is, until she learned that Billie is actually her mother . </P>

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