Four brave Bexley toddlers are raising hundreds of pounds to help their dear friend who is battling an advanced form of rare cancer.

Orlagh Keane, three and of Erith, was diagnosed with stage four neuroblastoma, a type of cancer that mostly affects babies and young children, in March of this year.

Since then, close friends and family have been doing their best to raise money and ease the cost of medical bills for Orlagh as she continues to fight this disease.

News Shopper:

Orlagh Kearns, 3, is currently fighting stage four neuroblastoma

MORE: 'Greenwich Jack' sets sail on the Thames after two years of hard work

Now, Orlagh's best friends have decided it's time they step up and do their part for their poorly pal with a 2km sponsored bike ride with proceeds going directly to

Orlagh's main fundraiser

.

Proud mum Fiona McDonald, a friend of Orlagh's mum Tracey, told News Shopper of the plan behind Evie, Millie, Blayke & Eloise's race around East Wickham Open Space on June 20.

"We were all obviously upset when we heard about Orlagh but we just thought, 'What can we do?'.

"It’s also really upsetting because the kids all play together and they just want to play with her again.

MORE: Beckenham girl raises awareness about Neurofibromatosis (NF1)

"They understand that she's (Orlagh) very poorly and that she's in hospital but obviously don't understand anything further, but they know that this (the sponsored bike race) will help her," she said.

Since a JustGiving online fundraising page was set up for the kiddie's good cause, Mrs McDonald said she was "overwhelmed" by the response as their initial target of £500 was smashed in a matter of days.

The little friends' fundraiser currently stands at £700.

The group are still accepting donations up to race day and those looking to contribute to the cause can do so

here.