Change the button, change the style
For a shirt, cardigan or jacket, a simple way to update the style is to change the buttons. All you need is a seem ripper, needle (that fits your new buttons), and a thread to match your garment. Start by taking off the old buttons - use your seem ripper to remove the seem holding them. Then simply start from the bottom and work your way up, button by button. And make sure that each button is secured properly before cutting the seem off.