Shirt by Heart Dagger, For your daytime thing, Spread collar, Press-stud placket, Short sleeves, Contrast piping, Oversized 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.