Emma Watson took a break from shooting The Perks of Being a Wallflower yesterday to go for a walk in Pittsburgh with her costar Johnny Simmons. The actress is getting to know her temporary city, since arriving there last week, with trips to the local mall, where she was photographed by fans while shopping at Barnes & Noble, and scenic afternoons outdoors. She's in Pennsylvania following a recent stint in France to debut the ad for Lancôme's Midnight Rose fragrance that she shot in March with Mario Testino. Emma Watson spoke about working with Lancôme while abroad, revealing that she helped pick the scent's name amd cast the leading man in the film portion of the campaign, as well as volunteered her own vintage hat for the images. Emma also spoke about her own fashion and makeup preferences. She told WWD, "I think less is more — less makeup, less accessories is better. I try to dress age appropriately, which isn’t actually that easy when obviously high-end clothing is designed for women who are older than I am. It’s a fine line to tread between looking smart and looking ready to go on a red carpet but also looking like I’m 21. It’s quite difficult. . . . Casually I love to wear Isabel Marant, A.P.C., Chloé and Agnès B. In American brands, I love Vena Cava. I think Stella McCartney is great, and British brands — obviously, I love Burberry."