Royal Baby: What to Know About Prince William and Kate Middleton's New Addition

PHOTO: Prince William and Catherine, Duchess of Cambridge leave St Pauls Cathedral after a Service of Commemoration for troops who were stationed in Afghanistan, March 13, 2015 in London.PlayChris Jackson/Getty Images
WATCH Kate Middleton Welcomes Baby Girl

The Duke and Duchess of Cambridge's newest addition has arrived and it's a girl!

Prince William, 32, and Duchess Kate, 33, welcomed their second child today in the Lindo Wing of St. Mary's Hospital, the same place where Kate gave birth to the couple's first child, Prince George, in July 2013.

Born at 8:34 a.m. local time, she weighed 8 pounds, 3 ounces, according to an official announcement from Kensington Palace. In keeping with tradition, the official birth announcement was delivered by a palace footman and posted outside Buckingham Palace, the home of the queen. The same easel was used after Prince George's birth.

The baby's name has yet to be announced. As royal fans await the name and first official photo, here are some fast stats about the baby girl's birth and the world awaiting her.

DATE OF BIRTH: May 2, 2015

TIME OF BIRTH: 8:34 a.m. local time

WEIGHT: 8 pounds, 3 ounces

POSITION IN LINE TO THRONE: Fourth. The newborn is fourth in line to the British throne after her grandfather, Prince Charles, her father, Prince William, and her older brother, Prince George.

PHOTO: Prince William, Duke of Cambridge and Prince Charles, Prince of Wales arrive to attend the Most Noble Order of the Garter Ceremony on June 16, 2014 in Windsor, England. Arthur Edwards/Pool/Getty Images
Prince William, Duke of Cambridge and Prince Charles, Prince of Wales arrive to attend the Most Noble Order of the Garter Ceremony on June 16, 2014 in Windsor, England.

NUMBER OF DAYS ROYAL FANS CAMPED OUTSIDE ST. MARY'S HOSPITAL: At least 14. Kate and William sent two boxes of pastries and croissants and coffee to those fans who camped outside the hospital.

PHOTO: Royal fans Maria Scott, left Amy Thompson and John Loughrey wait outside the Lindo Wing at St Marys Hospital in London, April 20, 2015. Alastair Grant/AP Photo
Royal fans Maria Scott, left Amy Thompson and John Loughrey wait outside the Lindo Wing at St Mary's Hospital in London, April 20, 2015.

ESTIMATED COST OF 1-NIGHT STAY IN A SUITE OF TWO ROOMS AT ST. MARY'S HOSPITAL's LINDO WING: £6,570 pounds, or about $10,000 for a normal delivery.

PHOTO: Duchess Kate is expected to deliver her second child at the private Lindo wing of St. Marys Hospital in London, pictured on April 17, 2015. Matt Dunham/AP Photo | Inset: Lefteris Pitarakis/AP Photo
Duchess Kate is expected to deliver her second child at the private Lindo wing of St. Mary's Hospital in London, pictured on April 17, 2015.

NUMBER OF YEARS SINCE PRINCESS DIANA HAD WILLIAM AT ST. MARY'S HOSPITAL: 32. Princess Diana gave birth to Prince William on June 21, 1982, in the Lindo Wing of St. Mary's Hospital in London after 17 hours of labor.

PHOTO: Princess Diana holds her newborn son Prince William as they leave St. Marys Hospital with Prince Charles in London, June 22, 1982. AP Photo
Princess Diana holds her newborn son Prince William as they leave St. Mary's Hospital with Prince Charles in London, June 22, 1982.

THE HOSPITAL HAS BEEN OPEN SINCE 1937.
Prince George, Prince William and Prince Harry were all born in the hospital's Lindo Wing. Prince William is pictured visiting the hospital with nanny Barbara Barnes after brother Harry's birth on Sept. 15, 1984.

PHOTO: Prince William with his nanny Barbara Barnes leave St. Marys Hospital on Sept. 15, 1984 in London. Getty Images
Prince William with his nanny Barbara Barnes leave St. Mary's Hospital on Sept. 15, 1984 in London.

BABY'S AGE DIFFERENCE WITH THE QUEEN: 89 years.
The baby is the queen's fifth great-grandchild. The reigning monarch, Queen Elizabeth II, turned 89 on April 21 and ascended the throne in 1952.

PHOTO: Britains Queen Elizabeth delivers her speech in the House of Lords, during the State Opening of Parliament at the Palace of Westminster in London Wednesday June 4, 2014. Suzanne Plunkett, Pool/AP Photo
Britain's Queen Elizabeth delivers her speech in the House of Lords, during the State Opening of Parliament at the Palace of Westminster in London Wednesday June 4, 2014.

NUMBER OF AUNTS AND UNCLES: 3.
There's Prince Harry, 30, fellow "spare" to the heir of the throne. And who could forget Kate's younger sister, Pippa Middleton, 31, who turned heads at William and Kate's wedding in 2011, along with her younger brother, James Middleton, 28, not pictured.

PHOTO: Pippa Middleton and Prince Harry greet crowd of admirers from the balcony of Buckingham Palace, April 29, 2011 in London. James Devaney/Getty Images
Pippa Middleton and Prince Harry greet crowd of admirers from the balcony of Buckingham Palace, April 29, 2011 in London.

NUMBER OF NANNIES: 1. Maria Borrallo, the same nanny who takes care of Prince George, who will turn two in July, will also care for the new royal bundle of joy.

NUMBER OF HOMES: 2. Apartment 1A in Kensington Palace is the family's official home. They also reside at Anmer Hall, a 10-bedroom home on the queen's Sandringham Estate in Norfolk, pictured below.

PHOTO: Anmer Hall is Duchess Kate and Prince Williams 10-bedroom home on the queens Sandringham Estate in Norfolk. Getty Images
Anmer Hall is Duchess Kate and Prince William's 10-bedroom home on the queen's Sandringham Estate in Norfolk.

NUMBER OF SIBLINGS: 1. The little girl will have a big brother in Prince George.

PHOTO: In this handout image released on Dec. 13, 2014 by Kensington Palace, Prince George sits for his official Christmas picture in a courtyard at Kensington Palace in late Nov., 2014 in London Getty Images
In this handout image released on Dec. 13, 2014 by Kensington Palace, Prince George sits for his official Christmas picture in a courtyard at Kensington Palace in late Nov., 2014 in London

NUMBER OF PETS: 1 dog. The couple's black Cocker Spaniel named Lupo is very close to Prince George. The pooch was a wedding gift from James Middleton.

PHOTO: Catherine, Duchess Of Cambridge crouches with her dog Lupo during the Tusk Charity Polo Match at Beaufort Polo Club in Gloucestershire, England. Mark Cuthbert/UK Press/Getty Images
Catherine, Duchess Of Cambridge crouches with her dog Lupo during the Tusk Charity Polo Match at Beaufort Polo Club in Gloucestershire, England.

DUCHESS KATE'S LAST PUBLIC ENGAGEMENT: March 27.

PHOTO: Catherine, Duchess of Cambridge visits XLP at Christ Church, Gipsy Hill on March 27, 2015 in London. Samir Hussein/WireImage/Getty Images
Catherine, Duchess of Cambridge visits XLP at Christ Church, Gipsy Hill on March 27, 2015 in London.

PATERNITY LEAVE FOR PRINCE WILLIAM: Two weeks. William is taking a two-week paid paternity leave, plus, he has taken unpaid leave through June 1 for a total of six weeks to be with his family.

PHOTO: Prince William is seen at the controls of a Sea King helicopter during a training exercise at Holyhead Mountain, north Wales on March 31, 2011. John Stillwell/AFP/Getty Images
Prince William is seen at the controls of a Sea King helicopter during a training exercise at Holyhead Mountain, north Wales on March 31, 2011.

DUCHESS' MATERNITY LEAVE: Rumored to be several months.

NUMBER OF DAYS AWAY FROM WILL AND KATE'S WEDDING ANNIVERSARY: 3 days. She's a slightly late anniversary gift! The couple tied the knot on April 29, 2011, at Westminster Abbey.

PHOTO: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge smile following their marriage at Westminster Abbey on April 29, 2011 in London. Chris Jackson/Getty Images
Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge smile following their marriage at Westminster Abbey on April 29, 2011 in London.

BABY'S ESTIMATED BOOST TO BRITISH ECONOMY: $120 million. The birth may boost the British economy by $120 million in retail spending, an expert told ABC News. It's estimated that there was a $400 million economic bonanza that came with the arrival of Prince George in 2013.

FINAL BETTING ODDS FOR A GIRL OR A BOY: 8:15 or 11:8. Ladbrokes, a bookmaker in England, had the odds of the newest royal being a girl at 8:15 and a boy at 11:8.

ABC News' Carolyn Durand and Katie Kindelan contributed to this report.