India, Dec. 19 -- The swag gap refers to couples where one partner is visibly more stylish or fashion-forward than the other. Think model-entrepreneur Hailey Bieber and singer Justin Bieber, or singer-actor Selena Gomez and record producer Benny Blanco. Popularised online, the term has sparked debate: some call it shallow, while others argue that style is an extension of personality and shouldn't be dismissed....