Harry Potter star Matthew Lewis will bring a little magic to a fashion show which is aiming to raise thousands of pounds for sick children.

The actor, who played Neville Longbottom, is patron of the charity Bethany’s Smile, which is organising the event in Leeds tonight.

The charity was set up by 13-year-old Horsforth schoolgirl Bethany Hare to help youngsters with life-limiting or life-threatening illnesses. She had already raised more than £18,000 for Martin House Children’s Hospice.

Her fashion show has won support from celebrities and designers and all the ticket have sold out.

Bethany’s mum Yvonne Hare said: “The support has been unbelievable. Matthew Lewis is definitely coming and ten outfits have been donated by designers. They are absolutely stunning dresses.”

“We are going to Asda this afternoon to chose 30 kid’s outfits and 21 adult outfits in two hours. Then we have got a rehearsal tonight. It is absolute madness.”

She added: “We could have sold three times as many tickets as we are allowed – which is so frustrating. We could only sell 300 because of health and safety reasons.”

The event is taking place at 7pm at Headingley Carnegie Stadium. All funds raised on the evening will go to Bethany's Smile to support the care of children with life threatening, chronic and life limiting illnesses, outside the hospice environment.