"If Kylian keeps equaling my records like this I may have to dust my boots off again," 77-year-old Pele posted on Twitter.
READ MORE: Twitter Overwhelmed by 'Flood' of France's Scores Past 'Lazy' Croatia Goalkeeper
Pele was 17 when he bagged a double in Brazil's 5-2 victory against hosts Sweden in the 1958 FIFA World Cup final while Paris Saint-Germain striker Mbappe added France's fourth, and his fourth of the tournament, as Les Bleus beat Croatia 4-2 in Moscow on July 15.
The 2018 FIFA World Cup kicked off on June 14 and ended on July 15.