Kate Middleton and Prince William welcome their third baby

Kate, wife of UK's Prince William, gave birth to a baby boy on Monday, the couple's third child, her husband's office said.

The boy, the couple's second son, weighed 8 lbs 7oz and William was present for the birth.

"The Queen, The Duke of Edinburgh, The Prince of Wales, The Duchess of Cornwall, Prince Harry and members of both families have been informed and are delighted with the news," Kensington Palace said.

"Her Royal Highness and her child are both doing well." 

Her Royal Highness The Duchess of Cambridge was safely delivered of a son at 1101hrs.

The baby weighs 8lbs 7oz.

The Duke of Cambridge was present for the birth.

Her Royal Highness and her child are both doing well.

— Kensington Palace (@KensingtonRoyal) April 23, 2018

The Queen, The Duke of Edinburgh, The Prince of Wales, The Duchess of Cornwall, Prince Harry and members of both families have been informed and are delighted with the news.

— Kensington Palace (@KensingtonRoyal) April 23, 2018

William, 35 was born at the same hospital to the late Princess Diana in 1982.

The new baby will be Queen Elizabeth's sixth great-grandchild and fifth-in-line to the British throne behind siblings Prince George, 4, his two-year-old sister Princess Charlotte, their father William, and grandfather and heir Prince Charles.

William's younger brother Harry, who marries US actress Meghan Markle next month, will fall to sixth on the list. 

William and Kate met as students at St Andrews University in Scotland. They got married in a pageant-packed ceremony at Westminster Abbey in April 2011 and have since become well-known across the global stage.

Having had homes in north Wales and Norfolk in eastern England, William and Kate now live at Kensington Palace to allow the prince to dedicate more time to royal duties on behalf of his grandmother.

(With Agencies Inputs)