A kaftan falls from the shoulders, so there’s no waistband pressing on a growing bump. Breathable cotton helps on warm days, and it slips on in seconds.

Most people take their usual size and let the loose cut do the work. If you want more room through the middle, size up. Short kaftans are free size.

• Summer cotton — the lightest and easiest to wash
• Crushed cotton — soft and low-iron, good for travel