Quess who is five month pregnant? Yup Kim Kardashian's older sister Kourtney! The 30-year-old reality star revealed on Ryan Seacrest’s radio show Thursday morning that her pregnancy was completely unplanned.

“This probably sounds so dumb, but there’s so many times I’ll forget to take my pill and I don’t think it’s that big of a deal. It’s just so stupid,” she admitted.

Kourtney already experienced the first physical change in her body: "My boobs got huge right away."

How exciting... You will think that she'll be all depressed since one of the physical changes that comes along with a pregnancy is that you gain weight, but this doesn't seem to be one of her concerns. In fact, she's even said she loves her new curves.

Congrats Kourtney, and say bye bye to all that partying you and Khloe were expected to do in "Kourtney and Khloe Take Miami." Instead have fun preparing for motherhood.