Over the weekend, she and John welcomed their newborn daughter into the world, later announcing her arrival on social media.
Introducing his baby girl to his followers, John had tweeted yesterday (17 April): "Our new love is here! Luna Simone Stephens."
John then revealed that he and Chrissy had actually welcomed their daughter last week on 14 April. He added: "Born on Thursday, the 14th. We couldn't be happier!"
Our new love is here! Luna Simone Stephens, born on Thursday, the 14th. We couldn't be happier!— John Legend (@johnlegend) April 17, 2016
Chrissy, meanwhile, took to Instagram to share her baby joy. She shared a photo that revealed Luna's weight. It read: "My weight is 6lb 11oz."
Alongside her post, Chrissy gushed: "She's here! Luna Simone Stephens, we are so in love with you! And sleepy. Very sleepy."
On Twitter, the new mum added: "Thank you for all the well wishes!!! we are so happy and excited! i dunno what to tweet now. does my twitter change? this is so awkward."
Chrissy and John first announced they were expecting in October last year. The pair, who have openly spoken about their struggle to conceive, told fans they were "so happy" to finally have a little one on the way.
At the time, Chrissy had revealed: "John and I are so happy to announce that we are pregnant :). As many of you know, we've been trying to have a baby for a while now. It hasn't been easy, but we kept trying because we can't wait to bring our first child into the world and grow our family.
"We're so excited that it's finally happening."
So far, the couple are yet to share a photo of little Luna.
Her arrival comes over two years after John and Chrissy tied the knot. They married on 14 September 2013 in Como, Italy - just over a year after John popped the question.
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