India, May 3 -- Move over, basic layering, there's a new style flex in the fashion world, and it's twice as nice. If you thought one crisp button-down was plenty, the Spring/Summer '26 runways of Stella McCartney and Loewe, along with your favourite celebrity Instagram feeds of stars like Dua Lipa and Janhvi Kapoor, are here to prove you're exactly one shirt short. Whether you call it 'shirt-on-shirt' or the 'double shirt', the trend is all about stacking collars, clashing prints, and making your most versatile closet staple work overtime....