R&B singer Alicia Keys is expecting her second child.

The Empire State of Mind hitmaker announced the news on Thursday (31Jul14) by posting a picture on Instagram.com of her and musician husband Swiss Beatz to celebrate their fourth wedding anniversary. A large bump was clearly visible under her dress.

In the caption, she wrote, "Happy Anniversary to the love of my life @therealswizzz !! And to make it even sweeter we've been blessed with another angel on the way!! You make me happier than I have ever known! Here's to many many more years of the best parts of life!"

The pair already has a three-year-old son named Egypt.