As half of the city of London witnessed the marking of the Queen's 90th birthday with formal celebrations, the other half cycled through the streets completely naked in protest over road safety and the environment.
Today was the turn of Londoners to strip off, saddle up and take part in the World Naked Bike Ride - an organised event aiming to raise awareness of the dangers of cyclists on the road as well as the impact of oil dependence.
And providing a feast for the eyes as they do so.
Some people made food jokes.
While others made no jokes at all.