Here are some steps you can take to look more mature:
1. Dress nicely: Present yourself as a well-groomed, professional individual. This helps people see you as older instead of a child. For guys, wear khakis or dress slacks. Pair them with a tucked-in polo or button-up shirt. Wear a nice leather belt and dress shoes . For women, wear clothes that fit well and are not too revealing. Avoid graphic tees, logos, wild prints and trends. Solid colors and graphic/logo-less clothes make you look more refined and mature .
2. Accessorize: Swap the sneakers and sandals for a pair of leather boots, dress shoes, heels, or nice flats. A statement bag can really help pull a style together, and often serves as the centerpiece of an outfit .
3. Get a more mature haircut: Some haircuts can make people's faces look a lot younger, while others give the impression of maturity. A good hairstylist can help you choose the right cut for your face shape and hair type .
4. Style your hair every day: This simple step can go a long way toward making you look more sophisticated .
5. Go easy on the makeup: Many people think wearing heavy makeup makes them look older, but it actually has the opposite effect. Instead of piling on layers of foundation and concealer, try using just enough to even out your skin tone .
6. Check your posture: Having good posture is so important – it completely changes the way you carry yourself. Good posture is synonymous with confidence and maturity .