But it turns out they’re not the only members of the Swedish royal family with a bun in the oven!
Carl Philip’s sister, Princess Madeleine, took to Facebook over the weekend to share that she is also expecting a baby with her husband Chris O’Neill.
“Chris and I are thrilled that I am expecting,” the 35-year-old penned.
“We look forward to four becoming five!”
The Royal Court has since confirmed that she is in good health and is due in March next year.
The happy couple – who wed in 2013 – are already parents to Princess Leonore, 3, and Prince Nicolas, 2.
The new baby will have plenty of royal cousins to play with, with Carl Philip and Sofia already sharing one-year-old Prince Alexander.
Princess Victoria and her husband Prince Daniel also have two children, Princess Estelle, 5, and Prince Oscar, 1.
This article first published on New Idea.