Winter evening dresses compared here provide two different upper outlines. On the burgundy dress, long sleeves reach the wrists and the neckline sits close to the neck. The red example also has long sleeves but leaves the shoulders open. Use those visible differences as a starting point for planning the move into the venue. Coverage describes a shape; it does not establish warmth or the composition of either garment.
First decide what you want to remain visible after leaving your coat at the cloakroom. Do you prefer the closed upper area of the burgundy example or the open shoulder line of the red one? Add your actual outer layer next and practise removing it. The hanging red side panel also calls for a look at its position relative to the coat hem and floor. With the narrower burgundy dress, assess the change from arriving to sitting at the table. Give each reference a different practical job rather than treating either as a universal winter uniform. Photographs of your complete outfit with and without the coat will make the comparison clearer.
