Check your wardrobe. Things that make you look old...

You could probably look a lot younger, just by adjusting your wardrobe. 

Kim Johnson Gross, author of “What to Wear for the Rest of Your Life,” has a dozen fashion don’ts:

1. Sneakers: Outside of the gym, they just look sloppy and careless. The same goes for other “comfortable” shoes such as loafers, moccasins and low-heeled pumps. 

2. Baggy pants: This style screams old on anyone over 25. Overly tight looks bad too. Well-fitting clothes make you look slimmer and younger.

3. Boring colors: Skin tone gets duller with age. Black is harsh on aging women and brown makes men fade into the woodwork. Try shades of gray and blue instead.

4. Your glasses: Men and women should have some fun with glasses. It's a great way to update your look and make it more modern. Tell your optician what you're looking for, or bring a stylish friend with you.

5. Turtlenecks: You may think a ­turtleneck hides a sagging neck and chin, but it just draws attention to your jowls.

6. Stiff or one-tone hair: An overly styled helmet of hair looks old-­fashioned. Hair that's a solid block of color looks unnatural and harsh. Invest in highlights or even go grey more gracefully with some silver highlights to brighten things up. Men NEED grey at the temples and should treat thinning hair as a badge of honor. Lose the comb over and keep it neatly trimmed or shave the head.

7. Missing or bushy eyebrows: Women's eyebrows tend to disappear with age. You’ll need an eyebrow pencil - save the tweezers for rogue hairs popping out elsewhere. Men's are more likely to grow wild. Ask the barber to trim them, every time.

8. Deeply tanned skin: Leathery skin is out and now pale is the norm. A dark tan not only dates you, it increases wrinkles and your risk for skin cancer.­

9. Less-than-white teeth: Yellowing teeth add decades to your appearance. Everyone's teeth get yellower with age, but with so many teeth-whitening products available, there is no excuse to live with off-color teeth.

10. Nude or beige panty hose: They’re out of date. Young women can go with bare legs but older women should consider darker stocking or tights in the winter.

11. Poor-fitting bra: Get one that fits. You’re not the same size you used to be. 

12. Excess makeup. Thick foundation, heavy eyeliner, bright blusher and red lipstick all add years to your face.