Straight edge (sometimes abbreviated sXe or signified by XXX or X) is a subculture of hardcore punk whose adherents refrain from using alcohol, tobacco and other recreational drugs, in reaction to the excesses of punk subculture.
 For some, this extends to refraining from engaging in promiscuous sex, following a vegetarian or vegan diet or not using caffeine or prescription drugs.
 The term "straight edge" was adopted from the 1981 song "Straight Edge" by the hardcore punk band Minor Threat.
<ref name="Encyclopedia of Punk" /
The punk subculture, which centres on punk rock music, includes a diverse array of ideologies, fashions and forms of expression, including visual art, dance, literature and film.
 The subculture is largely characterized by anti-establishment views and the promotion of individual freedom.
 The punk subculture is centered on a loud, aggressive genre of rock music called punk rock.
 It is usually played by small bands consisting of a vocalist, one or two electric guitarists, an electric bassist, and a drummer.
The history of the punk subculture involves the history of punk rock, the history of various punk ideologies, punk fashion, punk visual art, punk literature, dance, and punk film.
 Since emerging in the United States, the United Kingdom and Australia in the mid-1970s, the punk subculture has spread around the globe and evolved into a number of different forms.
 The history of punk plays an important part in the history of subcultures in the 20th century.
Stuart Vevers is a British fashion designer.
 He graduated from the University of Westminster in 1996.
 His first job was at Calvin Klein, followed by Bottega Veneta, Givenchy and Louis Vuitton, where he worked with Marc Jacobs.
 He joined Mulberry as creative director in 2005 and was instrumental in the company's success, transforming their leather goods into the must-have bags.
 He has also collaborated with Luella Bartley and Designer of the Year, Giles Deacon.
 In 2006, he won the British Fashion Council's Accessory Designer of the Year award.
 In July 2007 it was announced that he had been appointed creative director of Loewe, and, on 25 June 2013, Vevers was announced to be the executive creative director at American label Coach.
Formal wear (Canada, US) and formal dress wear (UK) are general terms for clothing suitable for formal social events, such as a wedding, formal garden party or dinner, débutante cotillion, dance, or race.
 The Western style of formal evening dress, characterized by black and white garments, has spread through many countries; it is almost always the standard formal social dress in countries without a formal national costume.
Duro Olowu is a Nigerian-born, London-based fashion designer.
 He is best known for his innovative combinations of patterns and textiles that draw inspiration from his international background.
 His empire waist patchwork "Duro" dress was named "dress of the year" by both American and British "Vogue" in 2005.
 Some of Olowu's notable clients include Michelle Obama, Solange Knowles, and Iris Apfel.
 In 2005 he won "New Designer of the Year" at the British Fashion awards, the first designer to win without ever showing a runway presentation.
Elspeth Gibson (born 1963 in Nottingham) is a British fashion designer, known for her feminine style of design.
 Her designs are often characterised by lace, beading and embroidery.
 Gibson was the British Fashion Council's New Generation Designer of the Year in 1998, and examples of her work are held in the design archive at the Victoria and Albert Museum.
 Her clients have included Madonna, Zara Phillips, Cate Blanchett, Uma Thurman and Queen Rania of Jordan, for whom she has undertaken private commissions.
Punk fashion is the clothing, hairstyles, cosmetics, jewellery, and body modifications of the punk subculture.
 Punk fashion varies widely, ranging from Vivienne Westwood designs to styles modeled on bands like The Exploited to the dressed-down look of North American hardcore.
 The distinct social dress of other subcultures and art movements, including glam rock, skinheads, rude boys, greasers, and mods have influenced punk fashion.
 Punk fashion has likewise influenced the styles of these groups, as well as those of popular culture.
 Many punks use clothing as a way of making a statement.
Dame Vivienne Isabel Westwood {'1': ", '2': ", '3': ", '4': "} (née Swire; born 8 April 1941) is a British fashion designer and businesswoman, largely responsible for bringing modern punk and new wave fashions into the mainstream.
 She is an example of a modern day female impresario.
Punk ideologies are a group of varied social and political beliefs associated with the punk subculture and punk rock.
 In its original incarnation, the punk subculture originated out of working class angst and the frustrations many youth were feeling about economic inequality and the bourgeois hypocrisy and neglect of working people and their struggles.
 It was primarily concerned with concepts such as pro working-class, anti-establishment, equality, freedom, anti-authoritarianism, anti-corporate culture/corruption, anti-war, free-thought and non-conformity.
 One of its main tenets was a rejection of mainstream, corporate mass culture and its values.
 It continued to evolve its ideology as the movement spread throughout North America from its origins in England and New York and embrace a range anti-racist and anti-sexist belief systems.
 Punk ideologies range from left wing views (e.g., NOFX) to right wing beliefs (e.g., Misfits).

Question: Which British fashion designer lends their designs to the distinct social dress embraced by the Punk subculture?
Answer: Vivienne Westwood