While the edgy style was not really surprising for the Maroon 5 frontman who had gone platinum blonde and bald before, it's apparently not what he expected.
"This is what happens when you cut your own," he captioned the image, which showed him holding a razor while he looked himself in the mirror.
His pregnant wife Behati Prinsloo, who stood beside him to take the photo, also posted the picture on her Instagram account and wrote along with it, "Baby daddy..."
Adam and his model wife Behati are currently expecting their first child.