Get inspired by Sienna Miller's dog-walking attire by pairing a classic navy cardigan with denim leggings, black ankle boots and pops of red.
 Cable-knit cardigan, $49.50 at ae.com
 Scoop sweater, sale $29.95 at ae.com
 Patent satchel, sale $44 at newport-news.com
 Olsenboye denim leggings, sale $24.99 at jcpenney.com
 Chunky knit scarf, $24.50 at gap.com
 Kimchi Blue suede bootie, $58 at urbanoutfitters.com
 Red rover ring, $12 at lulus.com