Bennett finished off another brilliant performance by his 'dream team' Deceuninck–Quick-Step who worked to control the race and guide him safely around the streets of Paris and onto the final straight.
The Irishman stepped out from behind Michael Mørkøv who intelligently placed him into the right position in the final few hundred metres, finishing ahead of world champion Mads Pedersen (Trek-Segafredo) and Peter Sagan (BORA-hansgrohe). Aussie sprinter Caleb Ewan (Lotto Soudal) found himself too far back to feature in the sprint and finished seventh.
As his victory sunk in, Sam Bennett lifted his green bike above his head, crying out in relief and with realisation of the milestone he achieved and in his post-stage interview was his usual humble self.
"I can't tell you how excited I am," Bennett said. "Green jersey. Champs-Élysées, the world championships of sprinting!'
"All the years trying to come up trying to make it. It took me so long to get here."
"I'm sorry if I'm coming across too arrogant or anything but i'm just going to enjoy every moment of it."
"I never thought I'd ever be able to win this stage and to do it in green is so special and to do it with my dream team Deceuninck–Quick-Step.
"The way the boys rode all day. They're fantastic. Just so amazing the feeling I can't thank anyone enough.
"All the suffering through the mountains. So worth it now."
The rest of the stage was the usual final day to Paris, the only difference, the streets around France's capital was largely deserted due to the coronavirus restrictions.
The yellow jersey Tadej Pogačar made it safely through the day and onto the podium but more importantly so did Australian Richie Porte.
Connor Swift (Arkea Samsic), Pierre-Luc Périchon (Cofidis) Maximilian Schachmann (BORA-hansgrohe) and Greg Van Avermaet (CCC) tried the usual vain attempt at a breakaway on the Champs-Élysées with some 30 kilometres to go and built a maximum lead of around 20 seconds, the catch made at 4kms.