Jenny Chang / BuzzFeed When it comes to online shopping, getting clothes that actually *fit* can be half the battle. With vanity sizing, numbers and letters are usually of little help in determining which size will truly work for you. Here are some tips on how to outsmart confusing online shopping sizes... 1. Get your hands on some flexible measuring tape or a *string*. Andres Rodriguez / Getty Images If you don't have measuring tape handy, wrap a long piece of string around your body to take measurements and then measure the length of the string to get a sense of what sizes you should go for. 2. When measuring yourself, wear only your underwear and an *unpadded* bra. Leonard Mc Lane / Getty Images Having clothes on will make it very difficult to get accurate measurements. 3. To know your bust size, measure under your pits and around the fullest part of your chest. rissyroos.com If your boobs swell around the time of your period, measure them at their least and most swollen so you can get a sense of how much difference there is between the two. To learn more about taking your own measurements, go here. Advertisement 4. To measure your waist and hips, make sure the tape is flat against your body but not too tight. rissyroos.com Also, make sure you're measuring your waist BELOW your rib cage. 5. Follow these guidelines for full-body measurements (including height): charmedwearboutique.org Always measure yourself barefoot. 6. If you want to get SUPER accurate measurements, visit a tailor. Georgerudy / Getty Images "Call ahead to find out if they actually will do measurements, and be aware that a lot of places that do will charge for it," Suite M Sewing co-owner Megan Pippenger told BuzzFeed. 7. Use a sizing app like Fitbay to determine if a store has sizes that run big, small, or fit just right. Fitbay Fitbay shows the percentage of men and women wearing size small who have to buy a size up or down when shopping these brands. To unravel this sizing sorcery, the app uses over 100,000 data points from it's users so you can get a sense of what size to pick. For example: J.Crew usually runs large for both sexes and American Apparel runs small. Advertisement 8. You can also plug your measurements into sites like Threadbase or Sizecharter to find out what size you would be in popular brands. Threadbase Input the size you wear in a specific brand and these sites will translate your info into sizes across a BUNCH of other retailers. 9. Keep a note on your phone to catalog items and sizes from your fave online stores. Alison Caporimo This will help you remember what your ideal sizing sitch is. 10. If a store asks for your full hip measurement, hold something vertically from your stomach to your hips. lekala.co / Alison Caporimo While hip measurements measure the hips' circumference, a full hip measurement takes stomach protuberance into account. This kind of measurement might come in handy if you're getting something custom-made from an Etsy shop. You can take the full hip measurement while holding something (like a ruler) next to your relaxed stomach and measuring at the same level as you would when measuring your hips. 11. If you're worried about getting the sizing right, opt to buy specific silhouettes while shopping online. insideoutstyleblog.com If you're looking for a pencil skirt, it's crucial to get true measurements of your waist and hips to ensure that it fits comfortably all around. But if you're searching for an A-line or circle skirt, the waist measurement is the only one that really matters (and it's easy and cheap to adjust at a tailor shop). Shop for easier silhouettes and you'll probs return way less stuff. Advertisement 12. The same rule applies to dresses. ladylikeblog.com Tent, shift, and yoke dresses are much easier to eyeball size-wise than more tapered blouson and sheath dresses. 13. If you're petite, follow these tips to find clothes that will actually fit you when they come out of the box: stylecaster.com For example: If you're shopping for pants, your inseam measurement is THE HOLY GRAIL. Get that right and pants shopping will be a lot easier. 14. For basics with looser silhouettes (like tees and sweatshirts), check the men's section online. BuzzFeed Menswear typically uses higher-quality fabrics than womenswear, so if you're looking for something more likely to last with a less feminine silhouette, try your luck in the men's department. To learn more about what to buy in the men's section, go here. Now start *shopping*. Tap to play GIF Tap to play GIF The CW Share On facebook Share On facebook Share On vk Share On vk Share On pinterest Share On pinterest Share On lineapp Share On lineapp Share On twitter Share On twitter Share On email Share On email Share On sms Share On sms Share On whatsapp Share On whatsapp Share On more Share On more Share On tumblr Share On tumblr Share On link Share On link Share On copy Share On copy Omg It's Prime Day!