Stepping outside the Lindo Wing with their newborn for the first time, here's the proud royal parents.
The Duchess of Cambridge is wearing a sky blue, empire-waisted Jenny Packham dress with a polka dot pattern, and her trusty Pied a Terre wedge heels.
Jenny Packham gowns have served the Duchess well for many a major event, pre-pregnancy.
She remains one of Kate's favorite designers, clearly.
(L—R: at the Royal Albert Hall for a concert celebrating the 2012 Olympics, at a charity gala in 2011, and at a Remembrance Day dinner at St. James Palace in 2011.)
Comparisons to Princess Diana's polka-dot dress, worn for Prince William's grand debut back in 1982, were immediate.
(While featuring similar pleated details, Kate's dress is, on the whole, a lot less billowy. But then that was the '80s.)
Following a visit from her private hairdresser earlier in the afternoon, Kate's hair shone and billowed perfectly in some well-timed light gusts of wind.
Prince William has also cleverly planned his outfit in complimentary shades of blue. Blue, for a boy!
(Baby Cambridge wore something nice under a warm knit blanket.)
Another shot of Baby Cambridge, just because.
Earlier in the day, both sets of Baby Cambridge's grandparents had popped by. Here's the Prince Charles and Camilla, Duchess of Cornwall.
Note Prince Charles's jaunty pocket square. It's a nice touch.