Keep clothes in place with clothing tape

Read more about using clothing tape here.
Keep a spare button attached to the inside of shirts.

Secure bra straps to prevent them from slipping with a paperclip.

Keep a travel-size steamer for wrinkle-free clothes on the go.

Clothes can get all wrinkled inside suitcases or bags. If you have a compact steamer with you, you can quickly refresh your clothing instantly. The steam relaxes and releases wrinkles from fabrics, in half the time it takes you to iron.
Tuck jeans into boots for a sleek look.

Use adhesive hem tape for a no-sew hem.

Wear a belt to cinch oversized tops and dresses.

Buy a white shirt, black pants, jeans and neutral color tops for a basic wardrobe.

Wear a half-cami under tops to add an extra layer without bulk.

You can wear cami slips under sheer blouses, low cut tops for coverage.
Wear nude-colored underwear under white clothing to avoid visibility.

Nude-colored underwear closely matches your natural skin tone, making it less visible under white clothing. Wear any other color, even white, and it will be visible through white. Try it!
Wear shapewear under fitted dresses for a smoother silhouette.
Shapewear smoothens out any lumps, bumps, or lines, of your body and gives you a streamlined and polished look. You can wear shapewear that targets specific problem areas of the body – tummy, waist, hips, thighs, and buttocks.
Collar stays help to keep shirt collars crisp.

Collar stays are small, flat, and rigid strips of material, that are inserted into the collars of dress shirts.. They are made of plastic, metal, or even stiffened fabric. You can buy them in shops and they are a god send if you have shirts with limp collars.
Dress shirts usually have small pockets on the underside of the collar points to insert the stays. They give structure and support to the collar ends. The shirt looks all the more professional and polished.
Not getting into your Jeans? Spray water

Use a hair straightener to iron collars and cuffs.

If you do not have an iron or steam and want a stiff collar, in an emergency, use your hair straightener. You can use it on your hems too.
Use a hairdryer to loosen tight shoes

Make your own DIY homemade fabric freshener

Add a few drops of Lavender, citrus, or eucalyptus oils to cornstarch powder and keep inside a small jar. Shake from time to time. Use when needed – sprinkle this mixture where there is odor, such as underarms, collars, or socks. Shake off immediately. Do not use on dark-colored clothes, delicate or dry-clean-only garments.
Your hints are a welcomed way to make life easier and to save money. Thank you!