52nd-minute substitute Kylian Mbappe scored a second-half hat-trick as PSG eased past Club Brugge.
The French striker who recently returned from injury was introduced when the scoreline was 1-0 after Mauro Icardi' early opener.
The forward headed home the second goal within his ten minutes involvement in the match as PSG extended their lead.
Mbappe completed his hat-trick with a fast-double. Firstly, he sneaked a finish into the far corner after rounding the goalkeeper before latching superbly on to Angel Di Maria's wonderful through ball.
Mbappe is 20-year-old and this means he is almost a year younger than Messi (21) was when the Barcelona star scored his 15th goal in the Champions League.
This means he is the youngest player in the Champion League to hit the 15 goals mark.
Mbappe is also the first substitute to score a hat-trick in the Champions League since Joseba Llorente of Villarreal in 2008.
With these strikes, Mbappe added his name among the 10 highest French scorers in Champions League.
This result means PSG remain leader of Group A and are five points clear of Real Madrid having won all three of their games so far.