New York fashion week is fully into its stride, and there have been some much-anticipated collections showcased so far. The front rows have been full of fashionistas and icons including Alexa Chung, Rose McGowan, Anna Wintour and teen blogger Tavi. Here I give you my opinions on three of the hottest designers of the moment – Jason Wu, Alexander Wang and Prabal Gurung. Jason WU – Ready to wear Autumn/Winter 2011. Jason Wu’s collection was a mixture of androgyny and high glamour. The collection was strong on monochrome black/whites and greys, but with elements of block primary colours thrown into the mix. There were looks back to the past, with…