HOLLYWOOD, CA - FEBRUARY 28: Model Chrissy Teigen (L) and singer John Legend attend the 88th Annual Academy Awards at Hollywo
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John Legend and Chrissy Teigen are happy to be parents. Teigen announced the arrival of Luna Simone Stephens, the couple's first child and newborn daughter, on Sunday via Instagram.

Luna Simone was delivered Thursday (April 14). Teigen's photo was posted with the caption: 

She's here! Luna Simone Stephens, we are so in love with you! And sleepy. Very sleepy.

Teigen and Legend had long struggled to have a baby, and made public their plans to use IVF (In Vitro Fertlization) to conceive their child. Teigen told People in February about her plans to choose a female embryo: “Not only am I having a girl, but I picked the girl from her little embryo. I picked her and was like, ‘Let’s put in the girl.’ ”

Speaking with the magazine again this week, Teigen confirmed the couple's plans to use IVF to have more babies. She said: “The number of embryos we have left is not matching the number of people I want at my dinner table, so I’ll have to do it again.”