This combo of a navy long sleeve t-shirt and navy jeans is uber stylish and creates instant appeal. If in doubt as to what to wear on the footwear front, add a pair of low top sneakers to the mix. Undoubtedly, it's easier to work through an extremely hot hot weather afternoon in a cool getup such as this one. Wondering how to perfect casual outfits as you move into your 50s? This combo is the perfect answer.