Model Chrissy Teigen and singer John Legend shared the news of the birth of their baby girl on Sunday. The couple welcomed first child together, Luna Simone, at 6 pounds and 11 ounces on Thursday, April 14. "She's here! Luna Simone Stephens, we are so in love with you!" Teigen, 30, wrote in a post on Instagram. Legend, 37, also announced the news in a tweet.