This combo of a navy and white horizontal striped crew-neck t-shirt and light blue jeans is indisputable proof that a safe casual getup can still look extra stylish. Let your styling prowess really shine by finishing off this look with a pair of white canvas low top sneakers. As the weather starts to improve, it's time to shed those heavy winter layers and opt for an outfit that's lighter, like this one here. Wondering how to perfect casual style as you turn 30? This combo is the perfect answer.