First of all, this dark lining can be matched with some black or dark blue, such as wearing a dark blue sweater on black leggings or keeping warm, and adding a short skirt outside the base. I don't know why the short skirt is thin, or a little brighter red and black is also good, beautiful and fashionable.
Then the coat. I don't suggest choosing a bloated one. It only looks good on thin people, and we will only look fat in it. I usually like to wear a long windbreaker, which can visually feel that you have lost weight (because the windbreaker looks longer), but the extremes meet, don't grow too long to your ankles, and the effect is simply terrible!
Then there are shoes. Let's see if your calf is thick. If it's not thick, you can try boots. Wearing skinny boots will give people the feeling that you are thin. I have a friend whose waist is thicker than mine, but it is simply unfair to wear boots in winter! If the calf is thick, wear short boots, which are fashionable and beautiful to match.
If you are confident in your matching skills, you can try to distract people from meat by matching some eye-catching clothes or accessories. For example, break through the color, wear bright yellow and bright orange, which is absolutely beautiful (but I'm not good at it and dare not try), or match it with a beautiful small accessory, hat, scarf and necklace, which should be simple and steady.