Has Mischa Barton been secretly joining Sienna Miller on the set of her upcoming film Hippie Hippie Shake? The former OC star was recently spotted out-and-about in a very Boho ensemble consisting of a retro skirt, cardigan and '60s style hair band. You can copy the look for less with these great finds: Brown cardigan, £25 from Wallis; Retro hairband, £8 from Urban Outfitters and Pringle skirt, £123.40 from Net-a-Porter.com.