The 45-year-old posted the snap to his 357,000 Instagram followers revealing what he looked like aged just 22.
David captioned the picture: "When I was half my current age and weight."
The snap sent fans into a frenzy with one dubbing the comedian “cute,” while one flirty follower wrote: “Perfection then, perfection now, perfection always."
Holding up a chalkboard with his name, many laughed at how unnecessary this was as he "hasn't changed one bit".
INSTAGRAM • GETTY
Britain's Got Talent: David Walliams sends fans WILD with 'hot' throwback snap
When I was half my current age and weight.
One fan posted: “You look so hot in this,” while another wrote: “Hubba bubba.”
“Still good looking,” said someone else, while a fourth added: "I would then and now haha.”
David recently tweeted a picture of The Sun's front page story that alleged Simon Cowell had met with Katie Price.
Posting to his fans, the TV judge poked: “I look forward to discussing this story in depth today on camera.”
David Walliams sends fans WILD with 'hot' throwback snap
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Richard Jones has been revealed as Britain's Got Talent's tenth winner.
The Little Britain star made a dig at Simon over the front page splash, asking him whether it was a "mistake".
Turning to Simon at the London Palladium audition stage, David asked: “Was that the same mistake you made with Katie Price?”
Simon looked shocked and embarrassed and shook his head disapprovingly, according to The Sun.
Britain's Got Talent returns to ITV later this year.