On her way into her Santa Monica office, Jessica Alba showed off a casual look that was a happy marriage between sporty and chic — a mix we've been trying to master ever since sneakers became acceptable outside of the gym. The actress kept her style sophisticated thanks to these green houndstooth jeans by Big Star ($106), then pulled in laid-back flair with her black high-top Isabel Marant sneakers. Jessica completed her outfit with a two-toned Gerard Darel coat and two bags: an envelope-style crossbody and a black perforated satchel. Score Jessica's exact houndstooth jeans to work with high-top sneakers (just like she did) or pair them with a silky blouse and pumps for a work-appropriate spin. For a night out, we'd match these printed jeans with a leather tee and killer heels.