The baby's name is Lilibet "Lili" Diana Mountbatten-Windsor after Harry's grandmother and mother.
This was followed by "A MESSAGE OF THANKS FROM THE DUKE AND DUCHESS OF SUSSEX", that read: "On June 4th, we were blessed with the arrival of our daughter, Lili".
"Thank you for your continued kindness and support during this very special time for our family".
She weighed 7 lbs 11 oz.
Well, the couple explained in their official statement to Access Hollywood that it's the personal nickname of Queen Elizabeth II, but the truth is royal-watchers should know that close members of the royal family have been calling Queen Elizabeth that for years! Her middle name, Diana, was chosen to honor her beloved late grandmother, The Princess of Wales.More news: Biden Declares US Will Donate 80 Million Vaccine Doses
The Duke and Duchess of Sussex announced the birth of their daughter overnight, who they have named Lilibet "Lili" Diana Mountbatten-Windsor and, for those playing along at home, that's not one, but TWO royal nods. According to a report in US Weekly, a source told the news portal that Prince William and Duchess Kate were "informed about the birth and have sent Lilibet a gift".
"Congratulations to Harry, Meghan and Archie on the arrival of baby Lilibet Diana", Harry's father, Prince Charles, and his wife, Camilla, Duchess of Cornwall, shared on Twitter.
Harry, Meghan and their son, Archie Mountbatten-Windsor, meet Archbishop Desmond Tutu during their royal tour of South Africa on September 25, 2019, in Cape Town.
Meghan gave birth to her second child in California, at Santa Barbara Cottage Hospital in Santa Barbara, making the newborn the first senior royal baby born in the United States, and the first great-grandchild of the queen to be born outside of the United Kingdom.
Despite being seventh-in-line to the British throne, the Sussex's firstborn, two-year-old Archie, does not have a title.More news: Teen Shoves Bear off Wall To Save Her Dogs in Viral Video
As the eldest son of the heir apparent, Prince Charles, Prince William's children - George, Charlotte and Louis - were all given titles unlike their cousin Archie, who is the child of Charles' younger son, Prince Harry.
The little girl was born just days before what would have been Prince Philip's 100th birthday.
They will only become princess and prince once Prince Charles takes the throne.
Meghan had previously disclosed that she suffered a miscarriage last summer in a moving opinion piece for the New York Times.
The royal couple announced they were expecting an addition to their family back in February, sharing a black-and-white snap of them gazing at each other, while Meghan cradled her baby bump.More news: Why a commission to investigate January 6 was not established