last week: "Dancing topless brought a nice energy to the protest and was also a very body positive thing to do.
"A lot of people congratulated me for doing this, especially women.
"I'm not getting paid for this or doing it to draw attention to myself but just to save the planet."
Laura said her fellow Extinction Rebellion-member boyfriend is "very supportive" of her decision to bare all in public, as is her dad.
The activist added: "But it's got nothing to do with them because this is my body and I'm my own woman.
"They both know how passionate I am about saving the planet.
"I wasn't nervous about it at all and I felt that it made a lot of people happy."
XR grounded London to a halt two years ago as members took hold of the city's already-strained transport system, leaving commuters stuck.
And protests have kicked off all over again, with the two-week "Impossible Rebellion" from August 23 to September 4.
The group are demanding the Government stop investing in fossil fuels as part of their "beautiful, creative" protest - and are using drastic tactics for attention.
These have included putting up a giant pink table in Seven Dials, while the group's offshoot Animal Rebellion covered a Buckingham Palace fountain in fake blood.
Police have predicted the demonstrations will cause "cause significant disruption to London" and will pull cops away from tackling bloody crime in the capital.
It was last month revealed that protesters have so far cost taxpayers more than £50million after rioters blocked roads in London and smashed windows across the capital.
The staggering sum covered the police response to the group's climate protests in 2019 and 2020, Metropolitan Police gold commander Rachel Williams said.