Kim Kardashian and Kanye West have welcomed their third child, a baby girl, into their family via surrogate, TMZ is reporting. Kardashian has just confirmed the news on social media."Kanye and I are happy to announce the arrival of our healthy, beautiful baby girl," she wrote in a post on her website. "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. North and Saint are especially thrilled to welcome their baby sister."Kardashian's surrogate gave birth Monday, January 15 at 12:47 a.m. to a girl weighing 7lbs 6oz, Kardashian revealed in her announcement post.Kardashian confirmed she and West were expecting a baby girl via surrogate to Ellen DeGeneres back in November. Kimye is one of three Kardashian couples expecting: Khloé Kardashian and Kylie Jenner are also expecting their first babies in March (Kylie) and March/April (Khloé).