The World Naked Bike Ride took place on Saturday - in protest not against clothes, but against car culture.

naked bike ride

naked bike ride

The annual event aims to raise awareness of cycling as an environmentally friendly option and takes place in over 50 cities around the world.

Hundreds of bare-bottomed (and/or bare-chested) cyclists took to the roads of London as part of the celebration-slash-protest. Check out pictures from The Big Smoke, and other cities around the world, in our slideshow below...

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  • Cyclists participating in the 10th Annual World Wide Naked Bike Ride make their way down W Division Street in Chicago, Saturday, June 8, 2013.

  • Protesters some naked with their body painted during a bicycle protest in the northern port city of Thessaloniki, Greece, on Friday, June 7, 2013. More than 1,000 people took part in the ride, many in makeup, wigs and strategically-placed accessories. The annual event, the sixth held in Thessaloniki, was meant to draw attention to the overuse of cars and to highlight the alternative joys of cycling. (AP Photo/Nikolas Giakoumidis).

  • People take part in the annual World Naked Bike Ride in central London on June 8, 2013 to protest against car culture and to raise awareness of cycling as an environmentally friendly option. The World Naked Bike Ride (WNBR) is an initiative that takes place in over 50 cities around the world.

  • Protesters some naked with their body painted during a bicycle protest in the northern port city of Thessaloniki, Greece, on Friday, June 7, 2013.

  • Naked cyclists take part in the World Naked Bike Ride to protest against cars, gas emissions from cars and agressive drivers, in Guadalajara, Mexico on June 08, 2013. The Naked Bike Ride is a world event in which cyclists protest against car culture and oil dependency. (Photo credit: HECTOR GUERRERO/AFP/Getty Images)

  • Protesters some naked with their body painted during a bicycle protest in the northern port city of Thessaloniki, Greece, on Friday, June 7, 2013. More than 1,000 people took part in the ride, many in makeup, wigs and strategically-placed accessories. The annual event, the sixth held in Thessaloniki, was meant to draw attention to the overuse of cars and to highlight the alternative joys of cycling. (AP Photo/Nikolas Giakoumidis).

  • A semi-nude cyclist with a message written on her back that reads in Spanish "To the Queen, the bike" joins a protest ride with other bicycle enthusiasts in Mexico City, Saturday, June 8, 2013. Naked and semi-nude cyclists demonstrated to promote the use of bicycles and to highlight the damage caused by car dependency in the capital. (AP Photo/Marco Ugarte)

  • Naked cyclists take part in the World Naked Bike Ride to protest against cars, gas emissions from cars and agressive drivers, in Guadalajara, Mexico on June 08, 2013. The Naked Bike Ride is a world event in which cyclists protest against car culture and oil dependency. (Photo credit: HECTOR GUERRERO/AFP/Getty Images)

  • Protesters some naked with their body painted during a bicycle protest in the northern port city of Thessaloniki, Greece, on Friday, June 7, 2013. More than 1,000 people took part in the ride, many in makeup, wigs and strategically-placed accessories. The annual event, the sixth held in Thessaloniki, was meant to draw attention to the overuse of cars and to highlight the alternative joys of cycling. (AP Photo/Nikolas Giakoumidis).

  • Protesters some naked with their body painted during a bicycle protest in the northern port city of Thessaloniki, Greece, on Friday, June 7, 2013. More than 1,000 people took part in the ride, many in makeup, wigs and strategically-placed accessories. The annual event, the sixth held in Thessaloniki, was meant to draw attention to the overuse of cars and to highlight the alternative joys of cycling. (AP Photo/Nikolas Giakoumidis).

  • EDS NOTE NUDITY Protesters some naked with their body painted during a bicycle protest in the northern port city of Thessaloniki, Greece, on Friday, June 7, 2013. More than 1,000 people took part in the ride, many in makeup, wigs and strategically-placed accessories. The annual event, the sixth held in Thessaloniki, was meant to draw attention to the overuse of cars and to highlight the alternative joys of cycling. (AP Photo/Nikolas Giakoumidis).

  • Protesters some naked with their body painted during a bicycle protest in the northern port city of Thessaloniki, Greece, on Friday, June 7, 2013.

  • People take part in the annual World Naked Bike Ride in central London on June 8, 2013 to protest against car culture and to raise awareness of cycling as an environmentally friendly option. The World Naked Bike Ride (WNBR) is an initiative that takes place in over 50 cities around the world.

  • People take part in the annual World Naked Bike Ride in central London on June 8, 2013 to protest against car culture and to raise awareness of cycling as an environmentally friendly option. The World Naked Bike Ride (WNBR) is an initiative that takes place in over 50 cities around the world.

  • Protesters some naked with their body painted during a bicycle protest in the northern port city of Thessaloniki, Greece, on Friday, June 7, 2013.

  • Protesters some naked with their body painted during a bicycle protest in the northern port city of Thessaloniki, Greece, on Friday, June 7, 2013.

  • People take part in the annual World Naked Bike Ride in central London on June 8, 2013 to protest against car culture and to raise awareness of cycling as an environmentally friendly option. The World Naked Bike Ride (WNBR) is an initiative that takes place in over 50 cities around the world.

  • People take part in the annual World Naked Bike Ride in central London on June 8, 2013 to protest against car culture and to raise awareness of cycling as an environmentally friendly option. The World Naked Bike Ride (WNBR) is an initiative that takes place in over 50 cities around the world.

  • People take part in the annual World Naked Bike Ride in central London on June 8, 2013 to protest against car culture and to raise awareness of cycling as an environmentally friendly option. The World Naked Bike Ride (WNBR) is an initiative that takes place in over 50 cities around the world.

  • People take part in the annual World Naked Bike Ride in central London on June 8, 2013 to protest against car culture and to raise awareness of cycling as an environmentally friendly option. The World Naked Bike Ride (WNBR) is an initiative that takes place in over 50 cities around the world.

  • People take part in the annual World Naked Bike Ride in central London on June 8, 2013 to protest against car culture and to raise awareness of cycling as an environmentally friendly option. The World Naked Bike Ride (WNBR) is an initiative that takes place in over 50 cities around the world.

  • Naked cyclists take part in the World Naked Bike Ride to protest against cars, gas emissions from cars and agressive drivers, in Guadalajara, Mexico on June 08, 2013. The Naked Bike Ride is a world event in which cyclists protest against car culture and oil dependency. (Photo credit: HECTOR GUERRERO/AFP/Getty Images)

  • Naked cyclists take part in the World Naked Bike Ride to protest against cars, gas emissions from cars and agressive drivers, in Guadalajara, Mexico on June 08, 2013. The Naked Bike Ride is a world event in which cyclists protest against car culture and oil dependency. (Photo credit: HECTOR GUERRERO/AFP/Getty Images)

  • Naked cyclists take part in the World Naked Bike Ride to protest against cars, gas emissions from cars and agressive drivers, in Guadalajara, Mexico on June 08, 2013. The Naked Bike Ride is a world event in which cyclists protest against car culture and oil dependency. (Photo credit: HECTOR GUERRERO/AFP/Getty Images)

  • Naked cyclists take part in the World Naked Bike Ride to protest against cars, gas emissions from cars and agressive drivers, in Guadalajara, Mexico on June 08, 2013. The Naked Bike Ride is a world event in which cyclists protest against car culture and oil dependency. (Photo credit: HECTOR GUERRERO/AFP/Getty Images)

  • People take part in the annual World Naked Bike Ride in central London on June 8, 2013 to protest against car culture and to raise awareness of cycling as an environmentally friendly option. The World Naked Bike Ride (WNBR) is an initiative that takes place in over 50 cities around the world.

  • Naked cyclists take part in the World Naked Bike Ride to protest against cars, gas emissions from cars and agressive drivers, in Guadalajara, Mexico on June 08, 2013. The Naked Bike Ride is a world event in which cyclists protest against car culture and oil dependency. (Photo credit: HECTOR GUERRERO/AFP/Getty Images)

  • Naked cyclists take part in the World Naked Bike Ride to protest against cars, gas emissions from cars and agressive drivers, in Guadalajara, Mexico on June 08, 2013. The Naked Bike Ride is a world event in which cyclists protest against car culture and oil dependency. (Photo credit: HECTOR GUERRERO/AFP/Getty Images)

  • Naked cyclists take part in the World Naked Bike Ride to protest against cars, gas emissions from cars and agressive drivers, in Guadalajara, Mexico on June 08, 2013. The Naked Bike Ride is a world event in which cyclists protest against car culture and oil dependency. (Photo credit: HECTOR GUERRERO/AFP/Getty Images)