Poppy Delevingne has designed her own Christmas jumper for Save the Children's Christmas Jumper Day campaign.

The 30-year-old model has joined forces with fashion designer Molly Gunn, who founded her brand Selfish Mother in 2013, to design a slogan sweater under Molly's label with 'Cracker' emblazoned across the front to help support the charity organisation's upcoming campaign, which are available to purchase online at The FMLY Store.

And the blonde beauty has revealed she has loved working with the creative mastermind on the latest project, and found the designing process ''great fun''.

She said: ''Save the Children is a truly inspiring organisation ... But more needs to be done. And this is why I am working with Save the Children and proud to be supporting their Christmas Jumper Day campaign.

''It's been great fun designing a slogan and working with Molly. I would encourage everyone to buy my 'CRACKER' jumper, because who doesn't want to look like a cracker? But also check out the other jumper delights in the collection. Not only can you look festive, but also feel festive too this Christmas Jumper Day, knowing that all your support is going towards saving children's lives, not just in the Democratic Republic of Congo, but all over the world.''

Fellow models Erin O'Connor, 38, and David Gandy, 36, have also collaborated with Molly to create their own winter garment.

The dark-haired catwalk icon said: ''I've enjoyed every minute of working with Selfish Mother for this campaign and have loved designing my own festive 'OFF DUTY ELF' slogan. The sweaters really are the perfect way to add some Christmas fun into your wardrobe. It is a great feeling to know that we are making a difference and improving children's lives around the world and by purchasing a jumper from the collection you can too.''

David Gandy added: ''I feel honoured that Save the Children has asked me to join this fantastic line up to create my very own Christmas jumper with Molly Gunn. Save does so much great work every year helping children worldwide and now my very own 'NUTCRAKER' jumper can contribute to this brilliant cause.''

And Molly has revealed she ''feels good'' knowing her work can help children in developing countries.

She explained: ''I'm excited to be supporting Save the Children's Christmas Jumper Day! I've always admired the incredible work the charity does both in the UK and around the world. Whether the sweatshirts are a treat or a secret-santa gift for a loved one, I hope people enjoy wearing the sweatshirts this Christmas and feel good knowing they're contributing towards giving children the best chance in life.''