Victoria Beckham showed off her 2010-11 autumn/winter collection (her fourth) at New York Fashion Week on Sunday, impressing critics. Fashion designers are constantly being scrutinized, but Beckham has proven that she is no joke and will be designing fashion for the long run.

This is Beckham’s fourth collection of dresses, which includes 26, and in just these four she is showing her signature look. Her designs are nothing short of sexy – with restraint – using elegant lines and great attention to details. She explained her collection to the audience, saying that it was exercise in control, and she wanted to push herself and work with drapery and structure.

Beckham said she was inspired by the colour palette from the cartoon Dick Tracy, as well as dance pioneer Martha Graham and 1940s Hollywood femme fatale. This color palette, for those who don’t know, includes emerald, blood red, graphite and sapphire. She even wore one of the dresses from the new collection – a grey wool sweater-like couture dress – that she explained could be just thrown on.

Before the show, Beckham is said to have told her sons that she was going to do a big test. Then after the show she talked about how she wants to open a shop for her collections by 2015. She also joked about Romeo, one of her sons, wanting to take over the business, which may be a successful inheritance some day.

Beckham’s line is priced pretty heftily, but it has sold out even during the recession. According to various reports, it’s estimated by insiders that the collection could be worth as much as £4.7 million or £5.4 million ($7.5 million $8.4 million) just this year.

Tags: New York Fashion Week, Victoria Beckham