Queen Elizabeth II's granddaughter Zara Phillips has named her new daughter Mia Grace, the champion equestrian eventer and her rugby star husband Mike Tindall announced on Thursday.
Phillips, 32, gave birth to her first child last Friday. Mia Grace arrives five months after Britain's other royal baby -- Prince George, born to Phillips' cousin Prince William and his wife Kate.
Tindall, a former England centre, posted on his Twitter page: "For everyone who has asked... our daughter's name, it's Mia Grace Tindall."
The baby is 16th in line to the British throne and is a fourth great-grandchild for the queen.
Phillips won the eventing world championship in 2006 as well as a silver medal at the London Olympics in 2012. Her husband currently plays for and coaches English Premiership club Gloucester.