What is oversized?
Oversized (from English) oversize "Oversized" is a term used to describe loose-fitting clothing that intentionally appears several sizes larger than a person's actual size.

Elements of loose-fitting silhouettes have recurred periodically throughout fashion history. These include the flapper dresses of the 1920s, the voluminous shoulders of 1980s power dressing, and the baggy clothing influenced by hip-hop culture of the 1990s. Today, this cut has become a staple of the modern wardrobe.
The main difference between an oversized garment and one bought two sizes too big is the construction. These garments are created using special patterns: designers intentionally exaggerate certain details (shoulders, back width), while the sleeve length and neckline remain proportionate to the figure.
Distinctive features
Structurally, oversized garments are distinguished by a dropped shoulder seam and the absence of darts. The silhouette is usually straight or flared, with deeper armholes and wider sleeves.

The visual perception of volume depends on the chosen fabric. Heavyweight cotton, denim, and suiting wool are used to create an architectural, rigid form. A relaxed, fluid silhouette is achieved through soft, draping fabrics such as thick knits, cashmere, and viscose.

Oversized fit is most often used to create tailored jackets, hoodies, sweatshirts, and basic shirts. Cocoon coats and wide-leg palazzo pants are also constructed in this style.
How to wear
A classic oversized styling technique relies on balanced proportions. One oversized piece is paired with fitted or structured wardrobe items: for example, an oversized sweater paired with straight jeans or a pencil skirt.

Modern styling allows for a completely oversized silhouette, pairing wide-leg trousers with a loose jacket. To maintain the figure's proportions, these looks emphasize the slimmer parts of the body: rolled-up sleeves reveal the wrists, or show off the ankles or décolleté.
To balance out a chunky upper, choose appropriate footwear. To prevent the silhouette from appearing unstable, choose models with a heavier sole, a chunky heel, or a distinctive pointed toe.