Apparel-chain Express has appointed Sona Chawla to its board of directors, effective as of Aug. 1. She will also serve on the company's compensation and governance committee.

Chawla has served as president of e-commerce at drugstore chain Walgreens since January 2011. Previously, she served as senior vice president of e-commerce.

Prior to joining Walgreens, Chawla served as vice president of global online business at Dell. Earlier in her career, she held various positions with Wells Fargo including executive vice president of online sales, service and marketing.

Chawla's appointment increases the board's size to seven members, six of whom are independent.