PSG becomes the second club to win the competition back-to-back in the Champions League era.
Lookman’s goal proved to be the decisive factor in the game.
PSG dominated with slick passing, constantly pressing forward with intent.
The feat was achieved thanks to two saves from goalkeeper Gianluigi Donnarumma.
Lorient keeper Yvon Mvogo had to get down well to palm away Mbappe’s curling 17th-minute effort.
Ousmane Dembele also made his debut following his move from Barcelona when he was introduced off the bench.
Barcelona beat arch-rivals Real Madrid 3-1 in an El Classico final at the King Fahd Stadium in Riyadh, Saudi Arabia on Sunday night.
Two second half goals by Kylian Mbappé saw France triumph over Denmark and booked their place in the round of 16.
Robert Lewandowski struck a hat-trick in his first Champions League game for FC Barcelona to power the Catalans to an emphatic 5-1 home win over Viktoria Plzen on Wednesday.
Robert Lewandowski scored twice on Sunday night at the Camp Nou to help Barcelona to an emphatic 4-0 win at home to Real Valladolid.
