Looking sharp in the summertime can be a challenge. For the working folk, a blazer is a go-to for creating a put-together appearance, but committing to wearing this power piece all day only really works if your office AC is on full blast. And, if you need to venture outdoors, let's face it, that structured outer layer is the first thing to go. The solution? This season's savior is the sleeveless blazer, a summer-y alternative that suits warmer temps without sacrificing a clean line or strong shoulder. If you're finding it difficult to think of vests existing outside of the "denim" or "puffer" categories, see how senior style editor Annie Georgia Greenberg incorporates this crisp, white version from Old Navy into three completely different looks. Depending on the occasion, this staple can go from its power-dressing roots — think a new take on the three-piece suit — to a low-key look for the Fourth of July. Check out the video above to see how you can add a whole other layer to your look — literally.