Although the general public was thrilled about the first glimpse of the littlest royal, many people were confused about how quickly Middleton was back on her feet after labor - and in heels, no less.
According to the sources, Kate was admitted to the hospital before 6 a.m. on Monday morning.
The palace announced her pregnancy last September. Clearly, the two were excited to see their mom and their new baby brother, but they also didn't mind pausing to say hello to the cameras - especially little Charlotte.More news: Sanchez lifts lid on tough beginning to life at Old Trafford
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News, there's a chance Kate and Prince William will pick Hugh van Cutsem, brother of Prince George's godfather William van Cutsem, as one of their new son's godparents.
Prime Minister Theresa May congratulated Kate and William on Twitter. On March 21, she spoke at a symposium at the Royal Society of Medicine in London.
Prince Philip, 96, the husband of Queen Elizabeth, is the baby's great-grandfather. However, since that is no longer the case, the new baby boy now comes in fifth-in-line of succession, after elder sister Princess Charlotte. The traditional 21-round gun salute has 20 more rounds if fired from a royal park or palace, and a further 21 from the Tower of London because of its location in the City of London. "Five hours of labor, but the royal baby brexited his mother healthy".
The birth was overseen by a team of doctors including consultant obstetrician Guy Thorpe-Beeston and consultant gynecologist Alan Farthing - who were also called in for the births of George and Charlotte - as well as the hospital's midwives.
When a royal baby is born, pomp and circumstance ensues. Kate Middleton was discharged from the hospital seven hours after childbirth, and everyone reasonably raised the question "how could she get out so early?"