Carolyn Bessette-Kennedy is most commonly reported to have been about 5 feet 9 inches tall, roughly 175 centimeters.

Most biographical and celebrity–stats sites list her height as 5'9" (175 cm) , and they also tend to agree on a weight around 128–130 pounds (about 58–59 kg), which fits photos of her tall, very slim frame. Some fan and forum discussions debate whether she might have been closer to 5'10" (about 178 cm), especially because she worked around fashion models and often wore heels, but even in those discussions, people usually settle in the 5'8"–5'9" range, with 5'9" as the best estimate.