LETTER FROM LONDON: While Thursday marked the opening of Acne Jeans stores in both Paris and New York, Wednesday saw the multidisciplinary Swedish brand launch its magazine, Acne Paper, in the ballroom of London's Claridge's Hotel. The Champagne-fueled event, complete with a turbaned Tabla player providing background music, drew a hipster crowd including Chrissie Hynde, Henry Holland, Liberty Ross and Daisy de Villeneuve, many of whom were clad in the label's signature drainpipe jeans. "I think it was important for us to do something in London, it's such a stimulating and creative city," said Thomas Persson, editor in chief of Acne Paper, who had chosen exoticism as its theme for spring. "It was really interesting to explore — exoticism used to be about newness, but now we can Google everything, so it's different from the past," added Persson. And Persson said the brand is so enamored of London, an Acne jeans store for the city is in the works, with posh Mayfair a possible location. — Nina Jones