Commuters pull out for the annual No Trousers On The Tube ride

Hundreds of London metro commuters have stripped their pants to make a half-naked trip for the annual No Trousers On The Tube ride.

Crowds met outside the National Gallery on Trafalgar Square for the 10th annual event before going underground where they boarded trains on various metro lines in the capital.

More than 100 people piled on the Piccadilly line, where they struggled to remove their pants because of the crowds.

Hundreds of London metro commuters took part in the 10th annual No Trousers On The Tube ride this afternoon

Hundreds of London metro commuters took part in the 10th annual No Trousers On The Tube ride this afternoon

Regular sunday passengers were stunned when men and women in their brightly colored underwear were talking, reading and taking pictures of each other

Regular sunday passengers were stunned when men and women in their brightly colored underwear were talking, reading and taking pictures of each other

Regular sunday passengers were stunned when men and women in their brightly colored underwear were talking, reading and taking pictures of each other

Brave passengers ride on a Jubilee Line train while taking part in the event on Sunday afternoon

Brave passengers ride on a Jubilee Line train while taking part in the event on Sunday afternoon

Brave passengers ride on a Jubilee Line train while taking part in the event on Sunday afternoon

Another group posed at Canada Wharf and participated in the No Trousers On The Tube event

Another group posed at Canada Wharf and participated in the No Trousers On The Tube event

Another group posed at Canada Wharf and participated in the No Trousers On The Tube event

Regular Sunday passengers were stunned when men and women sat in their brightly colored underwear to talk, read, and take pictures of each other.

After they switched to the Jubilee Line in Green Park, the group got off at Canary Wharf to do some aerobics on the platform before jumping into another train.

Other groups left for landmarks in London, including one to parliament.

Sisters Tessa and Matilda Deterding said they came for the first time because they liked the idea behind it.

Some brave party-goers even stopped to pose half-naked as they traveled through the city

Some brave party-goers even stopped to pose half-naked as they traveled through the city

Some brave party-goers even stopped to pose half-naked as they traveled through the city

Multitudes piled on brightly colored underwear on various pipelines across the capital

Multitudes piled on brightly colored underwear on various pipelines across the capital

Multitudes piled on brightly colored underwear on various pipelines across the capital

The event is part of the global No Pants Subway Ride, which started in New York in 2002 and has since expanded to more than 60 cities around the world, including Tokyo, Jerusalem and Moscow.

The event is part of the global No Pants Subway Ride, which started in New York in 2002 and has since expanded to more than 60 cities around the world, including Tokyo, Jerusalem and Moscow.

Some party-goers are reading in a train as they travel through the city

Some party-goers are reading in a train as they travel through the city

The event is part of the global No Pants Subway Ride, which started in New York in 2002 and has since spread to more than 60 cities around the world

A couple in the No Trousers Tube Ride parade near other participants at the entrance to a subway station

A couple in the No Trousers Tube Ride parade near other participants at the entrance to a subway station

A couple in the No Trousers Tube Ride parade near other participants at the entrance to a subway station

Tessa, 24, from London, said: & # 39; We read about it and thought it sounded hilarious. I was not nervous about it.

I like the sentiment behind it, instead of a stiff upper lip it is a bit of a laugh. & # 39;

Matilda (22) said: & # 39; I especially chose my pants, you have to choose a beautiful opaque. You do not want to give too much spectacle. & # 39;

Unrestrained party goers then went to the Chandos pub in Trafalger Square for an after party.

The London event was organized by the Stiff Upper Lip Society, who asked participants to "strings / budgie smugglers / see-throughs". to avoid

The London event was organized by the Stiff Upper Lip Society, who asked participants to "strings / budgie smugglers / see-throughs". to avoid

The London event was organized by the Stiff Upper Lip Society, who asked participants to "strings / budgie smugglers / see-throughs". to avoid

A group of three women sits in a circle line in their underwear

A group of three women sits in a circle line in their underwear

A young mother is waiting for a platform with her son

A young mother is waiting for a platform with her son

A group of three women (left) sits in a circle line in their underwear while a young mother (right) is waiting for a platform with her son

One of the organizers, Farhan Rasheed, said that there was not really a goal for the event, it was just a little fun

One of the organizers, Farhan Rasheed, said that there was not really a goal for the event, it was just a little fun

One of the organizers, Farhan Rasheed, said that there was not really a goal for the event, it was just a little fun

The annual event is part of the global No Pants Subway Ride, which started in New York in 2002. Since then it has spread to more than 60 cities around the world, including Berlin, Lisbon and Toronto.

The London event was organized by the Stiff Upper Lip Society, which asked participants to avoid strings / budgie smugglers / all-round views as we strive to entertain amusing underground users.

One of the organizers, Farhan Rasheed, said that there was not really a goal for the event, it was just a bit of fun.

People walk to a Jubilee Line train when they participate in the annual No Trousers On The Tube Day

People walk to a Jubilee Line train when they participate in the annual No Trousers On The Tube Day

People walk to a Jubilee Line train when they participate in the annual No Trousers On The Tube Day

Celebrators show off brightly colored underwear with a pattern while braying the tube on a cold winter's day

Celebrators show off brightly colored underwear with a pattern while braying the tube on a cold winter's day

Celebrators show off brightly colored underwear with a pattern while braying the tube on a cold winter's day

He added: "It makes no sense, we do not campaign or we do not create awareness of anything.

"People just enjoy it, it's a bit of a nonsense day out.

& # 39; You rarely get people who are insulted. It is London and London is used to it, they do everything to return to their book. & # 39;

A group of fearless friends laughed together as they left a subway station during the event

A group of fearless friends laughed together as they left a subway station during the event

A group of fearless friends laughed together as they left a subway station during the event

A jubilee line car filled with passengers without legs that read and take photos

A jubilee line car filled with passengers without legs that read and take photos

A jubilee line car filled with passengers without legs that read and take photos

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