Royal officials announced the news this afternoon that Queen Elizabeth II's granddaughter Zara and her husband, retired rugby star Mike Tindall, welcomed the newborn into the world on Monday - weighing 9lbs 3oz.
Zara Phillips Tindall and her husband, Mike Tindall, have welcomed their second daughter, Buckingham Palace confirmed on Tuesday.
Zara Tindall is the daughter of Princess Anne and Mark Phillips, who are divorced.
Buckingham Palace said in a statement that Mr Tindall was present at the birth.
The new royal, who is now 19th in line to the throne, arrives two months after the birth of Elizabeth's sixth great-grandchild, Prince Louis, the third child of her grandson Prince William and his wife Kate.
The little girl weighed 4.16kg (9lbs 3oz). In December 2016 the couple announced that they had lost a baby they had been expecting in late spring 2017.
Mike Tindall, Zara Tindell and their daughter Mia Tindall pose for a photograph during day three of The Big Feastival at Alex James' Farm on August 28, 2016 in Kingham, Oxfordshire. Picture: GettyIt's the couple's second child.
Last month, a heavily pregnant Zara stole the show at her cousin Prince Harry's wedding with her animated expressions during the ceremony.
The Queen is said to be "delighted" about the happy news.
The birth comes just over a year since Zara, a champion equestrian rider who won a team silver medal in the London 2012 Olympics, suffered a miscarriage.