In a recent Instagram post Smith told her followers she would not be posting any pictures of her son’s face, writing: “I won’t be putting pics of the boy up on social media.
Former Strictly dancer Kevin Clifton voiced his support for Smith, writing: “I really don’t understand the mindset of people who make these comments.”
The Bafta-winning actor, who can next be seen in BBC One crime drama The Barking Murders, gave birth to her son Billy in May.
Smith hit back with: “He wasn’t in it but I’m sorry you feel that way.