hello there. I have big boobs and so really struggle with bulky coats that look good. I spend each weekend morning over winter watching my DC play sports and so really need something warm and ideally waterproof/water resistant. I am hoping for something reasonably stylish and that covers my bum as find that really helps with warmth and comfort. I am.5'3 so a short arse too! Can anyone point me in the right direction with any recommendations? many thanks