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The pair were spotted covering their faces in a limo and dined together in North London on Tuesday, according to the Mirror.
Before their meal, the pair appeared in a fashion shoot together.
A source commented: "They got on famously during the shoot with Naomi giving Lewis tips on how to look his best.
"The pair were in fits of laughter. Then at the gala dinner they spent the evening engrossed in conversation about all sorts of subjects and you couldn't prise them apart."
Campbell first met Hamilton at the GQ Men Of The Year Awards and allegedly flew out to follow his final F1 races of the season because they got on so well.
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