This combo of a grey shawl cardigan and white jeans is impeccably stylish and yet it's relaxed and ready for anything. When it comes to footwear, go for something on the more elegant end of the spectrum with dark brown leather oxford shoes. With rising temperatures come warmer days and more sunlight and the need for a killer outfit just like this one. As you slip into your 30s, you probably want to start dressing like an adult. In this case, getups like this are a foolproof option.