Jessie J has donated clothes to Marks and Spencer's Little Shwop of Horrors.

The 'Bang Bang' singer has been clearing out some of her unwanted gear for punters to purchase at a petrifying pop-up shop which is being run in Marks & Spencer at Marble Arch, London, to raise money for Oxfam.

The one-stop shwop will be the perfect stop-off for anyone in need of a last-minute Halloween costume when it opens its doors on October 28, with other donations pouring in from stars including Girls Aloud member Nadine Coyle, 'Hot Fuzz' actor Simon Pegg and 'Skyfall' actress Naomie Harris.

Inside the spooky store, shoppers will be able to pick up the celebrity donations as well as items supplied through the sustainable fashion initative, Shwopping, where clothes are donated to raise money for the charity.

The store have also teamed up with stylist Grace Woodward who has offered customers exciting ideas for styling their own Halloween costumes from old clothing items and charity shop bargains.

Marks & Spencer's Little Shwop of Horrors has collaborated with Oxfam as part of its Plan A programme, which aims to give clothes an afterlife of their own.

The Little Shwop of Horrors Boutique is open from 8am to 9pm on Tuesday 28th to Wednesday 29th October 2014 at the Marks and Spencer store in Marble Arch, London.