Kim Kardashian West and Kanye West welcomed their baby boy into the world on Saturday, making two-year-old daughter North West a big sister.

Kim Kardashian and Kanye West welcome their new baby boy: https://t.co/oKGko7QetX pic.twitter.com/409m3CHLtb

— Mashable (@mashable) December 6, 2015

The Keeping Up With the Kardashians star was able to deliver the baby boy naturally. The baby was breech earlier in the week, and she feared if he remained that way she would need a C-section.

Fortunately doctors were able to turn the baby just in time for a natural delivery, a bit ahead of Kim Kardashian West’s actual due date.

The happy couple announced their exciting news via Kim Kardashian West’s website.

“Kim Kardashian West and her husband, Kanye West, welcomed the arrival of their son this morning,” the post reads. “Mother and son are doing well.”

Congrats! @KimKardashian has given birth to second child with @kanyewest: https://t.co/0ADdVByPUH pic.twitter.com/Uy7Mv9uHDz

— OK! Magazine (@OK_Magazine) December 6, 2015

It was just days ago that Kim Kardashian West was complaining about this second pregnancy, even calling herself “fat as f*ck.” Given the difficulty she experienced this time around, it’s likely this will be the last child for the couple.

Kim underwent several fertility treatments before she and Kanye announced in June that they were expecting a second child.

No word has yet emerged on what Kim Kardashian West and her hubby will name their baby boy. Rumors say his middle name might be Robert, after Kim’s father, the late Robert Kardashian.

Fans are no doubt anxiously awaiting those first precious baby photos. It’s uncertain which publication bought the rights to them, or how much they paid.

.@KimKardashian West had a baby boy! No news yet on which direction he'll be.

— Ellen DeGeneres (@TheEllenShow) December 5, 2015

What do you expect Kim Kardashian and Kanye West will name their baby boy? The name supposedly won’t be a take-off on sister North West’s name.