Don’t have a measuring tape? Use a phone charger cord or a shoelace. Mark where it meets, then measure that length with a ruler. Survival skills award goes to you. Also, avoid measuring after a big meal, during your period, or when you’re holding a glass of wine. Distorted data leads to distorted decisions.
Another fun fact: the first modern bra was patented in 1914 by Mary Phelps Jacob, who used two handkerchiefs and a ribbon. She basically invented the DIY spirit. You’re channeling her energy every time you eyeball that old string.