The first collection gathered a celebrity following – Una Healy was widely photographed wearing a range of pieces from the range, and now I can bring you a sneak preview of the second collection from Olivia Rubin for Dorothy Perkins. And, in my humble opinion, I think this collection is even better than the first. There are just so many great things I can say about this collection. I love the fact that Olivia has added very pretty knitwear to the mix, the sort of 1950s style jumpers that look great with pencil skirts or black skinny jeans. I love the way classic Dorothy Perkins styles have been given the…