Kim Kardashian and Kanye West have welcomed their newest family member and according to the celebrity mom, he is so far the “chillest” of all her kids. The couple already has three children, 5-year-old North, 3-year-old Saint, and Chicago, 15 months.

On Friday, May 10, Kardashian announced the birth of her child on Twitter. She told her followers that “he’s perfect” and that he also looks a lot like his sister Chicago. Kardashian’s surrogate was reportedly in labor on Thursday, May 9.

The reality television star wrote on Twitter this past weekend that while she was feeling pretty nervous about adding a fourth child to her ever-growing clan, the little tot seems to be the easiest one so far. On Saturday, the Keeping Up With The Kardashians star wrote on Twitter, “I was freaking out for nothing because he is the most calm and chill of all of my babies so far and everyone loves him so much.”

During her baby shower last month – which included her mother Kris Jenner, Kourtney Kardashian, Chrissy Teigen, Paris Hilton and more – Kardashian said that she felt as though she was getting in “over her head” by having four children under the age of 5. According to People Magazine, she said, “Because I’m freaking out and the baby is coming in, like, two weeks, I thought what better way to celebrate than to have a little CBD. I thought I’m freaking the f— out having a fourth kid.”

One of the reasons why Kim Kardashian and Kanye West have decided to use a surrogate for both their third and fourth children is because of Kardashian’s previous pregnancy experiences. Kardashian has long been open with her past struggles with infertility. In 2017, she also opened up about having placenta accrete, which is a rather serious condition that occurs when the placenta grows too deeply into the uterine wall. In most cases, the placenta detaches from the uterine wall after the mother gives birth. And while part of the placenta remains attached, it can also cause severe blood loss after childbirth.

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So far Kim Kardashian and Kanye West have not revealed the name of their fourth child. However, the celebrity mom has already sparked new speculation on social media after posting several new family photos with a simple teddy bear emoji in the caption. Some fans believe that the couple might have named their child either ‘Teddy’ or ‘Bear.’