The 36-year-old singer welcomed Shaffer Chimere Smith Jr yesterday, reported Aceshowbiz.
Earlier on Tuesday, Crystal shared on Snapchat a video, which she later reposted on Instagram, featuring herself in a hospital, probably hinting that she was waiting for the baby's arrival.
The clip showed her in a hospital room. Neither of them has officially announced the birth of their little one, but a news website gave fans a look at the baby boy as it uploaded on Instagram a photo of Crystal lying on a bed with her cute boy resting on her chest.
The couple tied the knot back on February 20 at the Terranea Resort in Rancho Palos Verdes, Los Angeles.
The boy is Crystal's first child with her new husband, who already shares a daughter and son with his ex-fiancee Monyetta Shaw.