Find a bracelet that fits you correctly. Set it down flat. Measure with a ruler the length in centimeters from the top of the clasp to end of the bracelet. Make a note of the measurement. Order your bracelet in a size as close as possible to this measurement.
CHOOSING A BRACELET SIZE BY MEASURING YOUR WRIST
Use a tape measure. Wrap the tape measure around the wrist on which you plan to wear your Cartier bracelet. Make a note of the number at the point where the tape meets the 0. To ensure the bracelet fits comfortably, add 1.5 cm. You can then add or subtract centimeters according to whether you prefer a loose, exact or tight fit.