Harry was snapped in the pic when he was 16 years old during his time on The X Factor in 2010.
What's the story behind the thong action?
Harry told The Mirror at the time (via DigitalSpy), "My favorite party trick is to wear nothing but a gold thong in the house."
He added, "My friend bought it for me for my birthday. The Belle Amie girls say I prance around the house in it. I'd say it's more of a slow, gentle stroll."
We're kind of hoping Harry has since retired the gold thong underwear trick now.