The 30-year-old actress, known for her piercing blue eyes, shared on her Instagram page on Thursday, July 17, a photo of herself wearing a sweatshirt that reads "Rock and Roll" while holding baby Otis as she takes a walk.
The child is seen peering over her shoulder and has dark brown eyes like his father's.
"Rock and roll, baby," Wilde said.
While newborn babies' eyes can change color as they grow older, brown eyes usually remain permanent due to their dominant genes.
Wilde and Sudeikis, 38, welcomed Otis, their first child, on April 20. Wilde later shared a first photo of their son and joked about an important lesson she learned regarding the care of infant boys.