He has been handed a court order preventing him from contacting Leigh-Anne for three years, as well as being given placed on a curfew monitored by an electronic tag, according to the Daily Star Sunday.
Lewis was also ordered to pay £200 compensation, £625 court costs and an £85 court surcharge.
CCTV footage of the incident was played in court showing the bodybuilder, who claims to be a video blogger, striking Leigh-Anne before she recoiled in horror.
In a victim impact statement, Leigh-Anne said: “The assault did not leave any cuts, bruises or marks. However, the boldness of the guy to assault me like that left me in a state of shock, embarrassment and humiliation.”
The attacker claimed he had meant to “push Leigh-Anne’s face”, calling the slap an accident, but the district judge rejected the claims.
He told Lewis: “You had gone over to the table, the conversation had clearly taken a turn you didn’t like. You used your size to intimidate and then slap her.