Bateau necklinesare similar to portrait necklines and they are a great choice for brides that want to minimize the size of their bust. Unlike the portrait style, which is completely off the shoulder, grey pants men. a bateau neckline attaches at the very edge of the shoulder and creates a barely curving line across the bust. The line creates a long, round collar blouse. slim neck and draws the eyes up to your face and away from a wide shoulder line.