Ms Foster, aged 18, has joined the 'Do it in a Dress' campaign while on holiday in New Zealand to help raise money for One Girl, which aims to help the 130 million girls around the world who are denied an education.

"I had booked a holiday to New Zealand roughly a week prior to learning about the Do it in a Dress campaign," she said.

"After researching this amazing cause, and learning more about the social injustices that these girls face, I knew that it was a cause that I could wholeheartedly get behind.

"I signed up right away and began planning my Do it in a Dress adventures so I could raise funds during my travels in New Zealand."

Ms Foster has already ridden the 'Sky Screamer' crane catapult ride in Auckland, taken to the hills of Rotorua inside a giant inflatable 'Zorb' ball and gone white water rafting a a school dress.

"Throughout the trip so far, I've felt nothing but incredibly humbled and grateful that I can raise awareness and funds for these girls in developing countries, as well as spread the word further in Australia and New Zealand," Ms Foster said.

In the lead up to the International Day of the Girl, the One Girl charity has asked participants to raise funds while wearing school dresses on behalf of girls who are denied the chance to attend school.

Ms Foster said she was inspired to join the campaign to help girls in developing countries double their future income and improve their health by attending school.

"Overseas, in places such as Uganda and Sierra Leone these young girls are denied what is such a basic right to us, and there's very little that they can do about it," she said.

"As much as myself and others would love to believe that we can fix this problem in an instant, we know this isn't a reality.

"Change doesn't come quickly, it's a long time in the making but every conversation, voice of change and cent counts."

Ms Foster's current fundraising goal is $1000.

"So far, I have raised $670.92 toward that goal," she said.

"If I reach my fundraising target, three girls will have the opportunity to be schooled for a year, as well as being provided with school supplies and menstrual supplies, boosting their quality of life and encouraging positive change."

Ms Foster said the most exciting activity on her fundraising campaign so far had also been the most challenging.

"I was lucky enough to hike the Tangariro Alpine Crossing... in a school dress. On this 20 kilometre hike, I pushed my body to the limits through many terrains - rocky mountains, snow, forest - and it took nearly nine hours to complete due to this rugged terrain," she said.

"Within this hike there was a one kilometre stretch that was purely stairs called The Devils Staircase, this pushed both my physical and mental stamina.

"This challenge made me realise that if you have a positive mindset and take just one step at a time you can achieve anything, just as educating one girl at a time can create significant change."

Ms Foster is documenting her campaign on Facebook via the 'Demanding Difference In A Dress' page and is collecting donations online via onegirl.org.au/fundraisers/libbyfoster/do-it-in-a-dress-2019.