H O W T O M E A S U R E
To measure, you want to start with your natural nails. Using a measuring tape, hold it over your nail at the widest part - this is typically towards the middle of your nail. You want to hold the tape horizontally and allow it to bend with the natural nail to get the true measurement, in millimeters.
IF USING A FLAT, NON-BENDABLE, RULER: Take a piece of tape, place it over your nail at the widest part and lay it down from side to size, horizontally. Take a marker and place a dot where each side of your nail is. Then, you can remove the tape from your nail and lay it flat on the ruler. This will allow you to measure it with the natural curve of your nail.
Here is a great reference video:
(video credit: Dreams of Glory via YouTube)
OR, you can purchase our 'Sizing Kit' to receive one of each size nail to ensure the perfect fit.