The 33-year-old belted out her hits in front of thousands on Friday night, showing off her very pregnant belly at the at the iHeartRadio Music Festival in Las Vegas, Nevada.
There was no missing the Girl On Fire singer’s protruding baby bump, even as she sat at her piano to pound out her classics.
Alicia, who is already mother to Egypt Daoud Dean, three, with the hip hop star, announced her second pregnancy via Instagram.
The R&B beauty told her fans: ‘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 sweet caption was accompanied with a photograph of Alicia clutching her beautiful baby belly while dressed in a Grecian floaty white gown, and looking towards Swizz who is sat down next to her.
For her performance, the songstress was dressed in a purple T-shirt with a cartoon of a hippie mixed with an Egyptian goddess on front along with a pair of tight blue distressed jeans and a leather jacket, wearing no accessories except for a pair of plum heeled boots and beads at the end of her long braids.