Young Curly Blonde Girl With Full Natural Breasts Reveals Her White Shirt And Short Grey Pants

A fly is a covering over an opening join concealing the mechanism, such as a zipper, velcro or buttons, used to join the opening. In trousers, this is most commonly an opening covering the groin, which makes the pants easier to put on or take off. The opening also allows men to urinate without lowering their pants.
Trousers have varied historically in whether or not they have a fly. Originally, hose did not cover the area between the legs. This was instead covered by a doublet or by a codpiece. When breeches were worn, during the Regency period for example, they were fall-fronted (or broad fall). Later, after trousers (pantaloons) were invented, the fly-front (split fall) emerged. The panelled front returned as a sporting option, such as in riding breeches, but is now hardly ever used, a fly being by far the most common fastening. Most flies now use a zipper, though button-fly pants such as Levi's 501 jeans continue to be available.
• Trouser support
At present, most trousers are held up through the assistance of a belt which is passed through the belt loops on the waistband of the trousers. However, this was traditionally a style acceptable only for casual trousers and work trousers; suit trousers and formal trousers were suspended by the use of braces (suspenders in American English) attached to buttons located on the interior or exterior of the waistband. Today, this remains the preferred method of trouser support amongst adherents of classical British tailoring. Many men claim this method is more effective and more comfortable because it requires no cinching of the waist or periodic adjustment.