Kelis Reveals Her Baby Bump at 2015 AfroPunk Festival [VIDEO]

R&B songbird Kelis, who just celebrated her 36th birthday, surprised concertgoers at the 2015 AfroPunk Festival by showing up pregnant.

The "Milkshake" singer performed at the annual music extravaganza in Brooklyn, N.Y., on Saturday (Aug. 22). Videos posted online show Kelis grooving to the sounds of her live band and caressing her baby bump in a pink sundress.

“I didn't know Kelis was pregnant so when she came out on that #Afropunk stage, I was like "wait, what? OMG!" tweeted one fan.

There's no word on how far along she is in her pregnancy or who is the father of her baby. This will be the "Bossy" singer's second child. She already has one son, Knight, with her ex-husband Nas. The pair divorced in 2009.

Along with being pregnant, Kelis has a cookbook coming out called My Life on a Plate: Recipes from Around the World. The book is scheduled to hit bookstores on Sept. 3.

Congratulations to Kelis on her new bundle of joy. We want to wish her a healthy pregnancy.