Mbappe bags hat-trick as PSG go top of Ligue 1
Mbappe opened the scoring in the third minute in Champagne country and then netted twice more in the second half to give PSG a win which moved the reigning champions to the summit a point above Nice, who drew at Montpellier on Friday.
PSG were also grateful to goalkeeper Gianluigi Donnarumma who denied Reims a route back into the game with a string of superb saves, as Luis Enrique's team recovered from their midweek Champions League loss away to AC Milan.
Mbappe is Ligue 1's leading scorer with 13 goals in 11 appearances this season, with the France captain also having netted twice in European competition.
That 2-1 defeat in Milan on Tuesday left PSG's hopes of reaching the Champions League knockout phase in the balance with two group games still to go, but they do finally appear to have found their rhythm domestically after a stuttering start to the campaign.
Luis Enrique's team were targeting a fifth straight victory in Ligue 1 and they went ahead almost from the off as Mbappe met Ousmane Dembele's cross from the right with a superb side-foot volley low across the goalkeeper and into the bottom corner of the net.
Reims were denied an equaliser as a fine goal by Japanese international Junya Ito was disallowed for offside, and the same player was later denied by Donnarumma who also produced a superb reaction save from Amir Richardson before the interval.
A PSG side missing the suspended Achraf Hakimi and Randal Kolo Muani were again grateful to Donnarumma when the Italian repelled a Marshall Munetsi header on 56 minutes, and three minutes later they went 2-0 up.
Mbappe evaded his marker with a brilliant darting run to the back post where he converted a perfect assist rolled across the face of goal by Carlos Soler.
Donnarumma was
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