“Wave Set Cephus,” the caption read.
Offset’s given name is Kiari Kendrell Cephus.
His wife tweeted a video showing a bejeweled necklace that read, “Wave.”
The couple, who secretly married in 2017, had not previously shared photos showing their son’s face.
They are also the parents of three-year-old daughter Kulture Kiari Cephus.