This casual pairing of a long sleeve shirt and blue jeans can be taken in different directions depending on how it's styled. Add a pair of red boat shoes to the mix and the whole look will come together. If you're after a summer-ready getup, this here is your inspiration. As you're moving from your 20s to your 30s, you probably want to start dressing like a grown-up. In this case, ensembles like this are ideal as inspo.