Bespoke tailoring

Bespoke tailoring is clothing made to an individual buyer's specifications by a tailor. 
Clothing.
Meaning of the term.
The word "bespoke" derives from the verb "bespeak", to speak for something, in the specialised meaning of "to give order for it to be made." Fashion terminology reserves "bespoke" for individually patterned and crafted men's clothing, analogous to women's haute couture, as opposed to mass-manufactured ready-to-wear (off-the-peg or off-the-rack). The term originated on Savile Row, a street in London considered the "Golden Mile of tailoring".
Bespoke clothing is traditionally cut from a pattern drafted from scratch for the customer, and so differs from ready-to-wear, which is factory made in finished condition and standardised sizes, and from made to measure, which is produced to order from an adjusted block pattern. The opposition of terms did not initially imply that a bespoke garment was necessarily well built, but since the development of ready-to-wear in the beginning of the twentieth century, bespoke clothing is now more expensive and is generally accompanied by a high quality of construction.
While the distinction conferred by haute couture is protected by law in France, the British Advertising Standards Authority has ruled it is a fair practice to use the term "bespoke" for products that do not fully incorporate traditional construction methods. The Savile Row Bespoke Association, a trade group of traditional tailors, disagrees. But it has taken no formal step to challenge the ruling.
Compared to made-to-measure.
A gray area has existed between the extremes of bespoke and ready-to-wear since the end of the 19th century in which a tailor measures the customer, but the garment is then made to the closest standard size, sometimes in a factory. The distinction made here is between bespoke, created without use of a pre-existing pattern, and made to measure, which alters a standard-sized pattern to fit the customer. Technological change makes this distinction more subtle, since fittings are increasingly required for made-to-measure. A bespoke service may require an individually-cut pattern, which is then kept should further suits be required; made-to-measure measurements are often stored on a computer. Even hand-work, often cited as a benchmark of bespoke, is now increasingly found in made-to-measure garments, while machine-making plays some part in the creation of most bespoke suits. With a bespoke suit, a pattern is designed and made from scratch based on the client's measurements, often from 20+ measurements involving multiple fittings, and takes considerably longer to produce than a made-to-measure garment. This ensures a precise fit, particularly in the shoulders as well as the posture areas. This custom fit is handy for clients with short or long necks, high or low shoulders, excess girth, high hips, large or flat seats, and more. Made-to-measure cannot adjust for these shapes and slopes.
In addition, new technologies have allowed for bespoke garments to be made with lean manufacturing practices and digital patterning, making new patterns within minutes and fully bespoke garments in hours, at a price point similar to made to measure or even mass production.
Advertising Standards Authority ruling.
In June 2008, the Advertising Standards Authority (ASA), a British advertising regulator, ruled that an advertisement describing a suit "put into a 'working-frame' where it would be cut and sewn by machine" as a "bespoke suit uniquely made according to your personal measurements & specification" was not breaching the Authority's self-proclaimed advertising codes, notably the truthfulness rule, because the use of the term bespoke was not deemed likely to confuse. The ruling was significant in formalising a less traditional definition of bespoke clothing, even though the older distinction with made-to-measure was recognised.
The ruling cited the "Oxford English Dictionary" definition of bespoke as "made to order," and considered that despite the fact a bespoke suit was "...fully hand-made and the pattern cut from scratch, with an intermediary baste stage which involved a first fitting so that adjustments could be made to a half-made suit," while a suit made-to-measure "...would be cut, usually by machine, from an existing pattern, and adjusted according to the customer's measurements," "both fully bespoke and made-to-measure suits were "made to order" in that they were made to the customer's precise measurements and specifications, unlike off-the-peg suits."
Some, such as the etymologist Michael Quinion, feel the ruling showed that "the historic term of art had moved on." Some others concluded that "bespoke tailoring has traditionally, if unofficially, meant something more than the dictionary definition allows" and that the ASA "took a rather ignorant decision to declare that there is no difference between bespoke and made-to-measure."