Currently I have a beltless double breasted cotton olive military style trench. My father said it made me look fat. So I might need a new coat. I love parkas, and juxaposition of a casual parka over more formal elements. But I'm wondering if I should go for a more traditional trench.
Examples from All Saints.
Top row is parkas. Middle of second row are trenches

http://www.us.allsaints.com/women/outerwear/