Victoria Beckham dines out in an optical illusion dress that makes her look EVEN thinner

She's modelled a few eye-catching garments in her time, but Victoria Beckham's latest outfit was positively hypnotic.Only days after stepping out in a 1960's style military outfit, the stick-thin star turned heads again and this time appeared to have achieved an hour-glass figure overnight.However, it was no more than a trick of the eye - an optical illusion - thanks to the clever use of some black and white horizontal lines.
The £2,500 knee-length dress was a present from her close friend and designer Alexander McQueen.Again, her choice of attire seems to have been inspired by a bygone era. The dizzying pattern was more reminiscent of the magic-eye puzzles that were all the rage back in the 1990s.
Professor Tom Troscianko, an expert in human vision at Bristol University, said: 'It is a very effective design which is clearly there to give the impression of a minuscule waist.'The thinner white silhouette running down the middle is ridiculously thin and then it expands at the breasts and hips.'It's the first time I've seen something like this used on a dress but it looks like it is simply a case of clever shading.'

The singer-turned-designer had been enjoying a dinner date with her husband David and several friends at La Risacca restaurant in Milan on Monday night.The pair were celebrating after David signed a deal to stay with Italian team AC Milan. It is believed that he has paid £2million from his own pocket to remain on loan from his American club LA Galaxy.He will now return to the US in the summer where Victoria is set to stay with their three children Brooklyn, 10, Romeo, six and Cruz, four, who are all at school in Los Angeles.She will make regular visits to Italy to support her husband who is desperate to re-establish himself in the England team.
In recent months Mrs Beckham, 34, has been back and forth between the two countries as well as fitting in fleeting visits to London and New York as she pursues her career as a fashion designer.
Last month revealed that the star racked up almost 26,000 air miles flying around the world in the first six weeks of the year.