This gold Haider Ackermann Amiral pyjama style shirt features three-quarter-length sleeves, a turned up collar, an invisible hook fastening at the front, lined front pockets, a loose fit and an all-over connected star pattern. In observational astronomy, an asterism is a popularly known pattern or group of stars that can be seen in the night sky. In fashion, this asterism appears on Haider Ackermann's pyjama style top, identifying you and your popularly known group of friends as those to watch, day or night.