Kim Kardashian West and Kanye West have ''got what they always wanted''.

In a Twitter post for Father's Day yesterday (21.06.15), the 'Keeping Up With The Kardashians' star let slip that her and the 'Bound 2' rapper were expecting a baby boy and with the pair already having a daughter, 2-year-old North, they're reportedly pleased about how their family is shaping up.

A source said: ''The excitement is overwhelming, whether it was a boy or a girl it is a big deal.

''But now they will have one of each and most likely will stop having any more children, they got what they always wanted.''

And the 38-year-old rapper is believed to have been ''thrilled'' when he found out the couple were having a son.

An insider added to HollywoodLife.com: ''The man is thrilled to be a father again and can hardly contain himself. North West was one of the biggest blessings of his life, and to experience that type of joy and abundance again is just remarkable.

''The most important thing to him is that the baby is born healthy. No matter what sex it is, he just wants the baby to have his musical talents and genius ideas, as well as Kim's beauty, intellect and charm.''