Kim Kardashian West has appeared to reveal the name of her fourth child with husband Kanye West while sharing the first photo of their newborn son.

The reality TV star took to Instagram to share a screenshot of a text message conversation with her husband which included a picture of their baby in a crib and the words: "Beautiful Mother's Day with the arrival of our fourth child. We are blessed beyond measure. We have everything we need."

She captioned the image: "Psalm West".

Their son Psalm West was delivered via a surrogate on Friday May 10.

Kardashian West shared the news of the birth on Twitter, writing: "He's here and he's perfect!"

The 38-year-old reality star said the new arrival looks just like his baby sister Chicago who was also born via a surrogate last year.

'Kimye' already have children North, 5, Saint, 3, and one-year-old Chicago together.

Kardashian and West used a surrogate for their third and fourth baby after Kardashian suffered high-risk complications during her previous pregnancies.

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