And no one's more excited about the royal baby bump announcement than the Kardashians, who took to Twitter this morning to congratulate the royal couple.
"Congratulations to the Duke and Duchess of Cambridge!!" Khloé Kardashian Odom posted. "A royal baby!!! :) awwww so sweet."
Lisa Maree Williams/Getty Images
We like to think of Mason and Penelope Disick as our own little American royal babies, so maybe there's a future meeting in store for these families separated by the pond!
To hear more about what the Kardashians are up to, make sure to tune in to the all new season of Kourtney & Kim Take Miami this January only on E!