The Milkshake hitmaker appeared to be sporting the baby belly when she performed at the AfroPunk festival in Brooklyn, New York on Saturday (22Aug15), and now she has confirmed the happy news, revealing she has a craving for tomatoes.

Kelis, who has a son from her marriage to rapper Nas, tells Us Weekly, "I'm pregnant! I'm so excited! It's really amazing... My neighbour grows tomatoes and leaves them on my doorstep and I’ll cut them up, use salt and pepper, and just eat them like that!

"And if someone talks about a certain food, my pregnancy brain gets so focused and I have to have it!"

The second-time mum-to-be reveals her six year old, Knight, can't wait to become a big brother.

She adds, "My son is excited... and I’m thrilled. With my cookbook coming out and a new baby, it’s a really exciting time for us."

Kelis' cookbook, My Life on a Plate, is scheduled for release next month (Oct15).