All the photos from the royal baby's debut

And then there were five! Hours after being admitted to St. Mary's Hospital in London, the Duke and Duchess of Cambridge stepped out of the Lindo Wing with their newborn son. The new parents of three were glowing as they gave the world its first glimpse at the newest member of Britain's Royal Family. Wrapped snugly in his mother's arms, the little prince slept through his big debut as his parents posed for pictures. After securing his son in the car, a proud Prince William told reporters that he now has "thrice the worry" before driving his family home to Kensington Palace to reunite with Prince George and Princess Charlotte. <p>Click through for all the photos from the royal baby's debut.
Congratulations Prince William and Kate! Hours after welcoming their third child, the happy couple introduced their little one to the world's media waiting patiently outside the Lindo Wing at St. Mary's Hospital in London. <p>Photo: © Getty Images
Prince William and Kate gaze adoringly at their son, who arrived at 11:01am on April 23. Before leaving the hospital, the couple shared the following note via social media: "Their Royal Highnesses would like to thank all staff at the hospital for the care and treatment they have received. They would also like to thank everyone for their warm wishes." <p>Photo: © Getty Images
Keeping with tradition, the Duchess of Cambridge carried her new arrival out of the hospital for the first time. <p>Photo: © Getty Images
Prince William and Kate were the picture of happiness as they posed for pictures on the steps outside the hospital. Earlier in the day, Prince George and Princess Charlotte spent about 15 minutes meeting their baby brother before heading home. <p>Photo: © Getty Images
The excitement over his birth did little to disturb baby Cambridge, who slept through his big debut. <p>Photo: © Getty Images
In a scene reminiscent of Prince George and Princess Charlotte's debuts in 2013 and 2015, respectively, the proud parents were greeted by cheers of congratulations outside the hospital. <p>Photo: © Getty Images
Kate takes a moment to admire her newborn son on the steps of the Lindo Wing. The mother-of-three dazzled in a crimson red dress by Jenny Packham. Baby Cambridge looked adorable swaddled in a white blanket and matching bonnet. <p>Photo: © Getty Images
Kate's post-birth fashion is very similar to that of the late Princess Diana, who also wore a white and red ensemble when leaving the hospital with Prince Harry back in 1984. This isn't the first time that the duchess has channelled her late mother-in-law for such an occasion. Back in 2015, Kate's blue polka dot dress was a fitting homage to the outfit Princess Diana wore following the birth of Prince William in 1982. <p>Photo: © Getty Images
Now with three children of his own, Prince William is a pro when it comes to fatherhood. Still, the future king looked in awe of his newborn, whose name will be revealed in the coming days. <p>Photo: © Getty Images
Prince William keeps a protective arm around his wife, who can't keep her eyes off her newborn son. After a busy nine-month pregnancy, the Duchess of Cambridge will now get to spend some quiet time with her little one. <p>Photo: © Getty Images
All ready to go! After a feverish photocall, the loving couple tucked their son into the safety of his car seat before driving him home to Kensington Palace. <p>Photo: © Getty Images
Unlike the Great Kate Wait of 2013, which saw the world's media waiting weeks for Prince George's birth, the youngest Cambridge arrived on his reported due date, April 23. <p>Photo: © Getty Images
Before Prince William departed for Kensington Palace, the 35-year-old told reporters that he now has "thrice the worry." <p>Photo: © Getty Images
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