Kate Middleton's daughter, Princess Charlotte, met Queen Elizabeth on Tuesday. Reuters

Queen Elizabeth came calling Tuesday to meet the royal baby, the newborn daughter of Kate Middleton and Prince William, according to a tweet posted by Sky News. The royal couple announced the name of their new infant daughter on Monday – Princess Charlotte Elizabeth Diana.

This is the first time the 89-year-old British monarch has met Princess Charlotte. Duchess of Cambridge Kate Middleton, 33, gave birth to the 8-pound, 3-ounce girl on Saturday at 8:34 a.m. local time at St. Mary's Hospital in London. The child is the fourth in line to the British throne after grandfather Prince Charles, Prince William and her brother, Prince George, who was born in 2013.

The child’s full name is Her Royal Highness Charlotte Elizabeth Diana of Cambridge, and part of her name pays homage to her grandmother, Princess Diana, who perished in a car accident in Paris in 1997 at the age of 36.

Elizabeth II is queen of 16 of the 53 member states in the Commonwealth of Nations. She is also head of the Commonwealth and supreme governor of the Church of England.

William and Kate have been together for more than a decade. The two met in 2001, when both were students at the University of St. Andrews in Scotland. The couple began dating two years later, and in 2007, broke up. Middleton and Prince William reconciled shortly after, and became engaged in October 2010 in Kenya during a 10-day trip to the Lewa Wildlife Conservancy.

The couple were married on April 29, 2011. In Britain, around 26 million people watched the event; approximately 300 million people worldwide watched it on television.

This is Middleton's second child and first daughter. She became pregnant with the couple’s first child in 2012, giving birth to Prince George Alexander Louis on July 22, 2013, at St. Mary's Hospital. The infant weighed 8 pounds, 6 ounces.