In clothing, the term double-breasted refers to a coat or jacket with wide, overlapping front flaps and two parallel columns of buttons or snaps; by contrast, a single-breasted coat has a narrow overlap and only one column of buttons. In most modern double-breasted coats, one column of buttons is decorative, while the other functional. The other buttons, placed on the outside edge of the coat breast, are either decorative (non-functional) or functional, allowing the overlap to fasten reversibly, right lapel over left lapel. To strengthen the fastening, a functional inner-button, called the jigger, is usually added to parallel-fasten the over-lapped layers together from the inside. 
Suit jackets and blazers typically have one to four rows of buttons (each row containing two buttons), one or two of the rows functional – the others are decorative. Each fastening method is identified using “number-on-number” terminology; the first number is the total number of front buttons, the second is the number of fastening buttons below the lapels (i.e. the second number also is the number of corresponding buttonholes). Six-on-two and six-on-one (as shown in the picture on the right) are the common button stances, but others exist. Stylistically, double-breasted suit jackets usually have peaked lapels, and fasten left lapel over right lapel as usual for men's jackets.
The original double-breasted jacket has six buttons, with three to close. This originated from the naval reefer jacket. Because shorter men may find that six buttons overwhelms their shorter torso, a four or six button configuration in which only the bottom one fastens may be a better option. The four-button double-breasted jacket that buttons at the lower button is often called the "Kent", after the man who made it popular - the Duke of Kent. 
Double-breasted suit jackets were popular from the mid-1930s until the late 1950s, and again from the mid-1980s to the mid-1990s. Today, double-breasted jackets are not as popular, and it is difficult to find them at many retail clothing stores; however, they continue to be produced for and advocated by the high-end menswear lines of Joseph Abboud and Ralph Lauren, as well as by bespoke tailors such as Thomas Mahon; they have also seen a small comeback in European and American youth fashion, albeit in a slimmer, more modern cut. 
Moreover, the overcoats – Pea coat and trench coat – are traditionally double-breasted; the single-breasted versions being civilian interpretations of a military fashion. Due to the double-breasted jacket's construction, it is usually not recommended to wear a double-breasted lounge suit unbuttoned, unlike the single-breasted jacket, which can be left open or unbuttoned. This is because the large amounts of overlapping fabric on a double-breasted jacket tender to gather at the sides when unbuttoned. There are, however, formal jackets which are designed to be worn unbuttoned, with a vest: These are designed to avoid the perceived unsightly gathering (see Tailcoat).
- ^ http://www.forbes.com/fyi/2008/0915/084.html
- ^ http://atailoredsuit.com/mens-double-breasted-suit-jacket-(a).html
- ^ Mahon, Thomas. "Fashion, Who Cares?" English Cut, June 25, 2005. Accessed January 9, 2010. 
- ^ http://www.gq.com/style/wear-it-now/201101/spring-style-preview-2011#slide=5
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Look at other dictionaries:
double-breasted — adj a double breasted jacket, coat etc has two sets of buttons →↑single breasted … Dictionary of contemporary English
Double-breasted — Dou ble breast ed, a. Folding or lapping over on the breast, with a row of buttons and buttonholes on each side; as, a double breasted coat. [1913 Webster] … The Collaborative International Dictionary of English
double-breasted — [dub′ lbres′tid] adj. overlapping so as to provide a double thickness of material across the chest, and having a double row of buttons: said as of a coat … English World dictionary
double-breasted — ► ADJECTIVE ▪ (of a jacket or coat) having a large overlap at the front and two rows of buttons … English terms dictionary
double-breasted — adjective Date: 1701 1. having one half of the front lapped over the other and usually a double row of buttons and a single row of buttonholes < a double breasted coat > 2. having a double breasted coat < a double breasted suit > … New Collegiate Dictionary
double-breasted — adjective (of clothing) fastened by lapping one edge of the front well over the other usually with a double row of buttons (Freq. 1) double breasted jacket double breasted suit • Ant: ↑single breasted … Useful english dictionary
double-breasted — adjective a double breasted jacket, coat etc has two sets of buttons compare singlebreasted … Longman dictionary of contemporary English
double-breasted — adj. Double breasted is used with these nouns: ↑coat, ↑jacket, ↑suit, ↑tuxedo … Collocations dictionary
double-breasted — dou|ble breast|ed [ ,dʌbl brestəd ] adjective a double breasted jacket or coat has two parallel lines of buttons down the front when it is fastened … Usage of the words and phrases in modern English
double-breasted — ADJ: usu ADJ n A double breasted jacket or suit has two very wide sections at the front of the jacket which fit over one another when you button them up … English dictionary