Try teaming a white and black horizontal striped crew-neck t-shirt with light blue jeans for an ensemble that's both bold casual and practical. Let your styling credentials really shine by finishing your look with white canvas low top sneakers. When leaves turn yellow and red and fall starts to take over, you'll love this getup as your uniform for unpredictable fall weather. This outfit illustrates that in your 30s your sartorial options are looking good.