What is a Formal Shirt? A formal shirt - otherwise known as the dress shirt - can be identified by its stiff collar, lustrous fabric, long tails and single or double cuffs. Although patterned versions are available, the most popular styles come in conservative colours such as white, blue or pink. About the Company GST Registration Date: Mar 2020 Legal Status of Firm: Proprietorship Number of Employees: Upto 10 People Annual Turnover: 40 L - 1.5 Cr