Shirt by Heart Dagger, One for your wardrobe, Embellished contrast collar, Some days call for a little extra, Dropped shoulders, Long sleeves, Relaxed fit, Think baggy and casual, Exclusive to ASOS. Heart Dagger welcomes ASOS to The House of Heart Dagger with an exclusive tailoring collection. A House which has been built on the very foundations that it strives to uphold and take forward: timeless style, rich fabrics, precision-cut suits and a touch of modern-day dandy.