While your partner is asleep, gently wrap a piece of string or thin strip of paper around their ring finger. Mark the spot where it overlaps, then measure that length in millimeters. Use a size chart ...

Make sure you purchase a sizer with the correct metric system ... Not got a tool and urgently need your ring size? You can try a printable ring size chart, like this one from Oliver Bonas ...

Make sure you purchase a sizer with the correct metric system, as other countries measure ring sizes in different ways,” she adds. Not got a tool and urgently need your ring size? You can try a ...