Editing Pajamas (section)

===Contemporary===
[[File:Drop seat pajamas 1.jpg|thumb|370x370px|Pajamas with a drop seat]]
Contemporary pajamas are derived from traditional pajamas. There are many variations in style such as [[sleeve|short sleeve]] pajamas, pajama bottoms of varying length,<ref>[https://web.archive.org/web/20190717204546/https://pijamasdeanimales.com/pijamas-antiguos/ "Harriet Traynham (R) and her guests still wearing their pyjamas at 3:15 pm,"] ''Life'' magazine, August 1951 (Photographer: Lisa Larsen)</ref> and pajamas incorporating various non-traditional materials. Often, people of both sexes opt to sleep or lounge in just pajama pants, usually with a [[t-shirt]]. For this reason, pajama pants are often sold as separates. [[stretch fabric|Stretch-knit]] sleep apparel with [[ribbing (knitting)|rib-knit]] trimmings are common, mostly with young children.

Although pajamas are usually distinguished from one-piece sleeping garments such as [[nightgown]]s, in the US, they have sometimes included the latter or a somewhat shorter [[nightshirt]] as a top. Some pajamas, especially those designed for infants and toddlers, feature a ''drop seat'' (also known as a ''trap door'' or ''butt flap''): a buttoned opening in the seat, designed to allow the wearer conveniently to use a [[toilet]].