This semi-casual combo of a cardigan and a navy dress shirt is very easy to put together without a second thought, helping you look amazing and prepared for anything without spending a ton of time rummaging through your closet. You could perhaps get a bit experimental with footwear and smarten up this look by finishing off with black leather derby shoes. As you're transitioning from your 20s to your 30s, you want to start dressing more maturely. That's when ensembles like this are a goofproof option.