Shirt by Heart Dagger, Add-to-bag potential: considerable, Point collar, Button placket, Contrast stitching, Short sleeves, Oversized-boxy fit, Designed to look baggy. 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.