WATCH: Princess Diana and Prince Charles take to the dance floor Plenty of royal throwbacks are making the rounds online as the royal family celebrates the Queen's Platinum Jubilee, with several featuring a suave-looking young Charles.From snaps of the future king with a full beard in a matching tweed getup, to a photo of him lounging in a garden chair, people have been surprised to discover that he wasn't always a white-haired 70-something.In fact, Charles was something of a looker (by '70s and '80s standards) and we've got photos to prove it.And he's not the only royal who has a secret past as a certified hottie - just keep scrolling to meet a few more of the hottest royal blokes of the past and present.Prince CharlesThe full beard? The matching jacket and cap? We've got to admit it; Charles was a bit hot in his youth.Prince CharlesFans have fawned over photos like this of the future king in his 30s, enjoying a spot of reading in the sun.Prince CharlesWe've never seen a royal windsurfing in a wetsuit before, but this is probably the best one out there.Prince WilliamRemember when Wills had hair and was a total heartthrob? It was a better time.Prince Carl Philip of SwedenYou've probably never heard of him, but this Swedish royal takes the cake as one of the hottest in the world.Prince Carl Philip of SwedenHe was just as hot in his younger years, with a bit of boyish charm to him.Prince Carl Philip of SwedenAnd like a fine wine he's only gotten better with age.Arthur ChattoHe's the Queen's great-grandson, but Arthur, 23, spends most of his time working as a personal trainer and it shows.