Yesterday, we caught up with LA cool girl, musician and model Sky Ferreira. Newly brunette Sky is the new face of haircare brand Redken and she's been over here for a one-off concert at The Basement in London. Having already been lensed this year for chic French brand Maison Kitsuné, Sky's fashion portfolio is growing thicker by the minute. She's gearing up for the release of her new album Night Time, My Time (out 17 March) and to support, wait for it, Miley Cyrus on her Bangerz tour coming up later this month. Here's what we chatted about…