As a whole, pajamas are universally the epitome of comfort, whether they're made of flannel, silk, satin, or cotton. The nightly ritual of changing into pajamas before bed is a well-loved tradition. Sleepwear has even made its rounds on the public scene with PJ-clad slumber raves and runway-worthy pajama sets. The need to wear pajamas all day long has even inspired a ban on sleepwear in public in China as well as in the classes at the Illinois State University College of Business.

Check out some comfy pajamas and bizarre pajamavations in the cluster below.