The French teenager announced himself on the world stage with a blistering performance in the 4-3 win over Argentina.
And not only is Mbappe winning on the pitch and he’s not doing bad off it, either.
The 19-year-old, who scored two goals and won a penalty in that win at the weekend, is being supported in the stands by the stunning Alicia Aylies.
Alicia, 20, was spotted at the Kazan Arena – the pair are rumoured to have started dating in May after Alicia was pictured at the Stade de France to see Mbappe in action for Paris Saint-Germain.
Alicia was actually born in the Caribbean, in Fort-de-France, the capital city of French Caribbean territory Martinique.
After her parents split when she was two, Alicia moved to South America to Matoury, French Guiana, with her driving instructor mother Marie-Chantal.
She is a beauty pageant star having won Miss French Guiana in 2016 before winning Miss France in 2017 – becoming the first former Miss French Guiana to win the crown.
Alicia was picked to represent France at Miss Universe 2017 and was one of the favourites to win the award.
However, she ended up finishing unplaced in the competition, which was eventually won by South African Demi-Leigh Nel-Peters.
Alicia isn’t just beauty either – she has the brains to match.
After graduating lycee (the equivalent of sixth form) with a qualification in science, she enrolled in the University of French Guiana, studying law.
Alicia currently splits her time between Paris and Matoury as she pursues her beauty queen career.
On Saturday she was pictured alongside another former Miss France winner, Rachel Legrain-Trapani. Rachel, 29, is the girlfriend of Benjamin Pavard, scorer of the goal of the World Cup so far.
She won Miss France in 2007.
Kylian Mbappe was hailed by Pele after the Frenchman matched a record held by the Brazilian legend since 1958.
In scoring two against Argentina, Mbappe became the first teenager since the three-time winner to score two goals in World Cup match.
He was also the first teenager to score two World Cup tournament goals since Michael Owen in 1998.
Pele wrote on social media: “Congratulations, Kylian. Two goals in a World Cup so young puts you in great company! “Good luck in your other games. Except against Brazil!”
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