Newleywed fashion designer Stella McCartney has donated an outfit to be auctioned on behalf of Barnardo's at a fashion show organised by the charity next week.

The organisers of the show are desperate to find a tall model to show the trouser suit off before it is sold.

The show, which is being held to raise awareness of Barnardo's fostering and adoption unit, will take place at the Copthorne Hotel, on the Quayside, in Newcastle, at 7pm on Thursday.

Children will model most of the outfits, from Barnardo's Retail, George at Asda, and designer shop Joseph M, from Durham, but the organisers need an adult to wear the Stella creation.

Spokeswoman Angela Robinson said: "I am desperate to find a woman, size eight to ten and over 5ft 6ins to model the outfit.

"A shorter woman could buy it and have the trousers taken up, but we need a tall model for the night and I just cannot find anyone."

The Stella outfit is one of her signature trouser suits, size 10 in an off-white linen and cotton mix. The suit has a doubled breasted, fitted jacket and hipster, flared trousers and will normally retail at about £800.

Volunteer models are asked to call 0191-281 5024.

Other raffle prizes have been donated by the Copthorne Hotel, Asda, and Saks.

Tickets cost £4 and are available by calling 0191-240 4811.