Kanye West and Kim Kardashian West welcome baby #4
Kim took to Twitter Friday afternoon to announce the news.
"He's here and he's perfect!" Kim wrote.
The baby boy was born through a surrogate. This was Kim and Kanye's second time using a surrogate to birth their child.
Kim also tweeted that the newest addition to their family resembled their third child "Chicago."
"He's also Chicago's twin lol I'm sure he will change a lot but now he looks just like her," she added.