This casual combination of a blue denim shirt and navy jeans is a fail-safe option when you need to look stylish but have zero time. Our favorite of a ton of ways to finish this ensemble is with dark brown leather work boots. During the colder months, when warmth is the priority, it can be easy to surrender to a less-than-stylish ensemble. This ensemble, however, is a good illustration that you totally can stay toasty and remain equally stylish in the colder months.