Kim Kardashian West and Kanye West welcome baby No. 3

The couple's daughter was carried by a surrogate.

The couple welcomed their third child, a daughter, via a surrogate on Monday, the reality star announced Tuesday.

The baby was born at 12:47 a.m. and weighs 7 lbs., 6 oz.

"Kanye and I are happy to announce the arrival of our healthy, beautiful baby girl. We are incredibly grateful to our surrogate who made our dreams come true with the greatest gift one could give and to our wonderful doctors and nurses for their special care," Kardashian West said in a statement posted to her website. "North and Saint are especially thrilled to welcome their baby sister."