Denim on denim…it's nothin' new. But when we saw Alessandra Ambrosio out and about in LA yesterday, her double denim combo was a fresh and sophisticated shift from the norm. Her collarless chambray shirt was slightly unbuttoned and tucked into her jeans—and she kept the accessories simple in matching brown tones. The result? A look suited for, well, just about anywhere. Hermès bag and belt not required.