Rihanna performed at the Super Bowl Halftime Show on Sunday, February 12.
She made a huge reveal during her performance, and her ex Chris Brown reacted.
Brown wrote "Go Girl" in a vague post after his ex's performance.
He did not tag Rihanna or mention her name on the update.
The 34-year-old songstress revealed her second pregnancy while performing at the Super Bowl.
She opened with "B**ch Better Have My Money" and performed other hit songs.
Rihanna wore a red ensemble and diamond earrings with her hair styled into a ponytail.
Brown congratulated her after her son's birth in May 2022.
He did not specify who the post was meant for, but the timing brought speculations.