Hundreds of commuters in London, Berlin, and Prague stripped off their trousers to take a half-naked trip for the annual No Trousers On The Tube ride.

Axar.az reports citing Dailymail.

The event is part of the worldwide No Pants Subway Ride, which began in New York in 2002 and has since spread to more than 60 cities across the globe.

In London, crowds met outside the National Gallery in Trafalgar Square before heading underground where they boarded trains on different Tube lines across the capital.

In London, crowds met outside the National Gallery in Trafalgar Square before heading underground where they boarded trains on different Tube lines across the capital.

More than 100 people piled on to the Piccadilly Line, where they struggled to remove their trousers due to the large crowds.