"Well, it's time we share the good news," Leah captioned on her photo while showing her elegant pregnancy look. "We're having a baby." Awww!
The musical couple have been in love and going strong for 10 years, and we've been lucky enough to see part of their journey on Keeping Up With the Kardashians.
Brandon has spoken out in the past about how strong their foundation of friendship is. We are sure they will be amazing parents and we can't wait to follow their new journey together!
Click through their most adorable pics and take a trip down memory lane!
Tune-in to a brand new Keeping Up With the Kardashians next Sunday at 9/8c on E!