You can buy flexible tape measures in the sewing section of craft stores. They’re usually with the needles, scissors, and other sewing accessories. Use a piece of string and a ruler if you don’t have a tape measure. Cut a piece of yarn or other string that’s longer than your torso. Then, you can use it to measure the length by starting with one end and placing your finger where the measurement ends. Hold it against the ruler to figure out the length. [2] X Expert Source Mia DanilowiczMaster Tailor Expert Interview. 8 January 2021.
If you can’t find a friend, you can use a bit of tape to hold it in place at the top. Then, use your other hand to guide the tape measure down your back.
Tilting your head forward will help those bones protrude a bit.
If you’re doing this yourself, keep the tape measure there with a bit of medical or masking tape if you’re having trouble holding it there.
Find the part of the spine that’s even with this point, and take the measurement there. Mark it down in inches and centimeters.
If you’re in between sizes, pick the smaller frame.
Look for flexible tape measures in sewing and craft stores. If you don’t have a flexible tape measure, cut a long piece of string to do the measurement, then place it on a ruler to find out the length. [10] X Expert Source Mia DanilowiczMaster Tailor Expert Interview. 8 January 2021.
This measurement is also called the torso loop.
If you’re doing this yourself, it may be easiest to lay the tape measure on the floor between your legs, then grab an end in each hand.
Take the measurement in both inches and centimeters and use it to find the best fitting swimsuit online.
You can tape it at the top if you don’t have anyone around to help you. A flexible tape measure will work best for this measurement. However, if you don’t have one, you can likely use a regular tape measure because you take the measurement straight down from your shoulders.
Take the measurement down in inches and centimeters, just in case.
Aim for about 2 inches (5. 1 cm) above your crotch.