A button down should be everyone's wardrobe staple. Whether it's for professional or casual setting it's a basic piece that polishes any outfit. The secret to pull off any button down shirt is mastering the shirt tuck.
See the big difference when the shirt is tucked in properly? This styling method is not limited to button down shirts. You can also do apply it to classic tees and blouses.
There's actually several tuck-in styles.
Depending on what you pair your top with you can try the following styles.
Here's a video to give you an idea of how to tuck in your shirt.
It's something I'm still trying to get a hang of, so don't worry if you can't get it right the first time!