Try on Definition 1 of 2Pro Tip 1/3Clothing Fit Use 'try on' when you want to make sure clothing fits your body size and shape. Could I try on that jacket to see if it fits? Pro Tip 2/3Immediate Action 'Try on' implies an action you will perform right away, often in a store or changing room. I'm going to try on these boots right here. Pro Tip 3/3Visual Appeal The phrase 'try on' can also suggest checking how clothing looks on you, not just the fit. Let me try on the hat to see how it looks with my outfit.