What is Another word for pajamas?

Here are some words for pajamas, depending on the context:

Formal:

* Nightwear

* Sleepwear

* Nightclothes

Informal:

* PJs

* Jammies

* Sleep shirt (for a top)

* Sleep pants (for bottoms)

* Loungewear (if they're meant for relaxing around the house)

More specific:

* Robes

* Nightgowns

* Onesies

* Slippers (if you're thinking of footwear worn with pajamas)

The best word to use will depend on the situation and your desired level of formality.