An eight-year-old girl whose hunt for a bone marrow donor inspired hundreds to take selfies with their pants on their heads has died.

Hollie Clarks family broke the news on the Facebook page that they used to raise awareness of her battle with the bone marrow disorder MDS, Wales Online reports.

Her dad Stephen of Penylan, Cardiff, wrote: Sad news today Im afraid.

"After a seven month battle with MDS Hollie past away peacefully in her parents arms. It is utterly heartbreaking and makes no sense.

We have a million memories and take huge comfort in the number of Anthony Nolan registrations that the campaign made.

We are sure that someday soon one of you will be asked to donate stem cells and give someone like Hollie a chance.

Thank you all for your support. We would appreciate some time and space to try and pick ourselves up. Love from Hollies Dad. The proudest Dad in the world.

The family also used the @HelpHollie Twitter account to tell all those who had supported their campaign the news.

They wrote: Very sadly today our brave little angel passed away. Hollie was the happiest child ever and we are blessed that she was part of our family.

RIP Hollie. We tried our best. You were the best daughter any mum and dad could wish for. Thank you.

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Inspirational girl loses fight with rare condition - after encouraging hundreds to wear pants on head