For an off-duty outfit, dress in a white and blue vertical striped long sleeve shirt and navy jeans — these pieces fit beautifully together. Complement your outfit with white canvas low top sneakers and the whole getup will come together brilliantly. When it's one of those gloomy fall days, what better to spice it up than a sharp look like this one? Wondering how to perfect casual outfits as you turn 30? This combo is the perfect answer.