An unstoppable Kylian Mbappe hit a hat-trick as Paris Saint-Germain romped to a 6-2 win away to Montpellier on Sunday that allowed them to open up a huge 12-point lead at the top of Ligue 1. Vitinha put PSG ahead at the Stade de la Mosson and Mbappe doubled their advantage midway through the first half, only for an Arnaud Nordin header and a Teji Savanier penalty to bring Montpellier back level at the interval.