John Legend and Chrissy Teigen have welcomed a baby girl named Luna Simone Stephens.

The couple 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 were married in 2013.

The couple announced the pregnancy in October after Teigen opened up about their fertility struggle and how she had undergone IVF treatments.