Kourtney Kardashian shocked everyone this week with her announcement that she is in fact pregnant.  What we’ve all been wondering is, who is the father?

Kourtney was on On Air with Ryan Seacrest this morning and she revealed that the baby daddy is her scummy ex-boyfriend Scott Disick.  She also revealed that her pregnancy is the result of forgetting to take a few of her birth control pills. (DUH!)

Click HERE to listen to Kourtney’s interview with Ryan Seacrest!