(CBS SF/AP) – John Legend and Chrissy Teigen have welcomed a baby girl named Luna Simone Stephens.

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Legend’s real surname is Stephens. He and Teigen announced the birth of their first child on social media Sunday. Their daughter was born Thursday.

The 37-year-old R&B star and the 30-year-old model married in 2013.

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They announced the pregnancy in October after Teigen opened up about their fertility struggle and how she had undergone in vitro fertilization treatments.

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