The 49-year-old actor was once heartthrob Jerry Smith on the sitcom, and was known for his iconic shaggy blonde locks and charming looks.
Fast-forward 20 years later, and Lewis has shocked fans with his transformation – which sees the star with short dark brown locks and lots of facial hair.
During his debut on The Morning Show, Lewis showed off his tufty new beard and his slicked-back brown hair.
Jason’s most noticeable change was his thick moustache, which completely changed his appearance.
His iconic character Jerry famously posed naked for a fake Absolut Vodka ad on the show, which became a huge hit with fans.
Jason spoke to hosts Larry Emdur and Kylie Gillies about the popularity of Sex and the City today.
“I think it starts with the title Sex,” the former show hunk smirked.
He continued: “Any good writing speaks for something we all experience and they did such a good job of doing that while keeping it funny and entertaining and sensational.
“But it was always something that was really heartfelt in each episode.”
The actor also opened up on filming the heart-racing scene where he stripped off in front of a live audience, including his on-screen girlfriend Samantha Jones.
He chuckled: “It was a lot of takes and a lot of people. It was a good lesson in getting used to your natural state.”
Jason admitted it took a while to film the saucy scenes as there was a lot of camera work involved.
“When you have lots of people in one scene, you have different people from different angles,” he said.
“I got to do it from many different directions, the poor cameraman had to deal with me.”
The former fashion model has since made appearances in American drama series Midnight Texas and TV film Seeds of Yesterday.
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