Girl Guide Rangers have undertaken a survey of their peers to find out the important issues on girls' minds.

Kiwi girls as young as seven feel a lot of pressure to look good and believe young people try to make themselves look "too perfect" on social media.

They also worry about others judging them based on what they wear and wish there was a more diverse range of body types in popular media.

A survey of more than 4000 New Zealand girls, aged seven to 17, has provided a rare insight into their fears, insecurities and aspirations.

Bevan Read/Fairfax NZ Girl Guide Rangers, from left, Briana Valgre, 15, Tayla Webb, 15, and Steph McIntyre, 14, say bullying and body image are big problems for girls.

The research into what matters most to girls, commissioned by GirlGuiding New Zealand, is being used to promote the organisation's new Guide Biscuit fundraising drive, starting on Monday.

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Preliminary findings showed that 29 per cent of girls said they worry about how they look, 52 per cent said people try to look "too perfect" on social media, and 61 per cent said there should be a better mix of body types in the media.

Other worries and concerns included feeling sad or depressed, people judging me wrongly, and working out who I am.

Fifteen-year-old Auckland Girl Guide Tayla Webb said she and her fellow guides talked at length about a wide range of issues, from domestic violence to mental health.

The survey results would help them learn which topics they should be discussing more, she said.

"We want to develop programmes, campaigns, we want to help girls with self esteem, confidence and body issues. Anorexia, bulimia, all those issues".

Briana Valgre, another 15-year-old Girl Guide, said dealing with bullying was a major concern that was particularly magnified online.

"It's scary how much people get judged on social media," she said.

"Some people are so rude and so blunt.

"I know a lot of people do it online what you wouldn't go up and say to someone in real life.

"You're already judging yourself because of how society is now and now when people judge you on your Facebook status or your Instagram photo you just feel more crap about yourself."

Instead she said she hoped that the Girl Guides could promote more positive use of social media to encourage each other.

GirlGuiding NZ CEO Susan Coleman said the survey results showed that helping young women navigate their way through life was more important than ever.

"At GirlGuiding, everything we do is about empowering girls and young women and nurturing those most important life skills – confidence, self-esteem, leadership and resilience," Coleman said.

"Of course nothing comes for free, which is why sales of our Guide Biscuits are so invaluable."

In an effort to increase sales of the iconic biscuits and reduce the fundraising burden on girls, GirlGuiding NZ has launched a Morning Tea Pack for businesses.

It costs $250 and includes 49 packets of original, chocolate and mini-chocolate Guide Biscuits, as well as a supporters jar.

The profits will help GirlGuiding NZ implement a range of programmes, including Free Being Me, an international campaign to help girls, aged seven to 14, with body confidence and self-esteem.

"Young people with high body confidence are more likely to also have high self-esteem and the confidence to reach their full potential in life," volunteer co-lead for Free Being Me New Zealand Hayley Wards said.

"Our vision for the future is that all girls and young women in every community in New Zealand are inspired and empowered to turn their dreams into reality."

The research also found that while "mum" was the top role model for most girls, they also looked up to actress Emma Watson for her courage in campaigning for gender and racial equality, as well as Michelle Obama and Pakistani activist girl guides.