Nighty vs. Nightgown vs. Kaftan: What's the Difference?

If you've shopped for sleepwear online, you've probably seen "nighty," "nightgown" and "kaftan" used almost interchangeably — sometimes even for the exact same product. They're related, but they're not the same garment, and knowing the difference makes it a lot easier to pick the right one for how you actually sleep.

Nighty

In India, "nighty" is the everyday word for a loose, comfortable one-piece sleep dress, usually falling somewhere between knee and ankle length. Nighties are built for function first: easy to slip on, roomy enough to move in overnight, and typically made in breathable fabrics like cotton or satin. Within the category you'll find short nighties (above or at the knee, popular for warmer months and honeymoon or bridal edits) and long nighties (ankle-length, often the everyday choice for year-round wear).

Nightgown

"Nightgown" is the more international, slightly more elevated term for the same broad idea — a one-piece sleep dress — but it leans toward a more tailored or delicate silhouette: think fitted bodices, lace trims, spaghetti straps, or a fuller, gown-like drape. In practice, a lot of what's sold as "nightgown" in Western markets and "nighty" in India overlaps heavily. If a listing emphasizes lace, satin drape or a bridal-occasion feel, it's usually leaning "nightgown."

Kaftan

A kaftan is a different shape altogether: a loose, flowing, often floor-length robe-like garment with wide sleeves, originally a Middle Eastern and North African style that's been widely adopted in loungewear and resort wear. Unlike a fitted nighty, a kaftan is meant to be roomy and unstructured throughout — good for hot nights, for lounging around the house, or for throwing on over swimwear at a resort. Some kaftans are sleepwear; many are equally at home as daywear or beachwear.

Which one should you pick?

If you want something fitted and simple for everyday sleep, a nighty or nightgown in cotton is usually the most practical. If you run warm at night or want maximum airflow, a kaftan's looser cut can feel cooler. And if you're shopping for a bridal trousseau, you'll typically see "nighty" and "nightgown" used for the more delicate, occasion-specific pieces, with kaftans showing up more in the resort and everyday-comfort edits.

Whatever the name, the fabric matters more than the label for how well you'll actually sleep in it — cotton for everyday breathability, satin for a cooler, smoother feel against the skin, and looser cuts like kaftans when you want the most airflow.