VIDEO : Chrissy Teigen & John Legend Are Expecting Another Baby!

Los Angeles ? Chrissy Teigen and John Legend are expanding their family. The model and the musician - who recently performed in South Africa on his world tour - used social media on Tuesday to announce they're expecting their second child together. Chrissy posted a video on Instagram that shows the couple's daughter, Luna, with her hands on her mother's stomach. Lunna adorably responds, "Baby.