The model BFFs were among the celebrities at the glamorous Monaco Grand Prix and were both seen hanging out with Lewis, 30, in the Mercedes Team Headquarters.
Cue lots of 'is he dating them?' rumours!
Well, according to E! News, there is no secret romance, with a source saying: "They are all just friends. No romance has happened."
Kendall, 19, and Gigi, 20, arrived in Monaco fresh from the Cannes Film Festival, where they had also been seen partying with Lewis at the amfAR Cinema Against Aids Gala.
In Monaco, the models – who were joined by fellow models Bella Hadid and Hailey Baldwin – took plenty of selfies in the Mercedes garage and Team GQ.
Over in LA, Kendall's mum Kris Jenner was clearly thrilled with her daughter's latest friend, reposting Gigi's Instagram message about Lewis which read: "We love you Lewis Hamilton. Everyone knows you da champ. #TEAMLH."
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