Like good whisky, there is a generation of European princes who seem to be getting even better as they mature.
Now entering their middle years, these royals are as fit as in their 20s – but are somehow more attractive, given they have the experience and knowledge that age brings with it.
And with two high profile weddings in the last few months, royal watchers have had plenty of opportunity to observe them.
Spain's Crown Prince Felipe is a case in point.
Onlookers couldn't help noticing how dashing the father of two looked beside wife Letizia at the marriage of Prince Nikalaos of Greece and his bride Tatiana.
Bearded as he usually is at the end of the summer and with a deep tan, the 42-year-old prince - who is in the spotlight more than ever while his father King Juan Carlos recovers from health problems – appears to be in the prime of life.
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Felipe's Scandinavian counterparts can also give him some competition in that department.
At a gala on the eve of Princess Victoria of Sweden's wedding, Norway's heir Haakon looked like he'd been consulting a manual on stylish dressing by James Bond.
Tall, dark and dreamy, the 37-year-old channelled 007 in a tux with a glamorous blonde – wife Mette-Marit – on his arm.
Meanwhile, Prince Frederik of Denmark has the added boost of his wife's pregnancy to give him a spring in his step.
Previously rather boyish looking, the 42-year-old prince has a new gravitas as he looks forward to becoming a father of four when his wife Mary gives birth to twins in the winter.