Hello, my friend, according to your situation, don't wear hip-pop loose sportswear, because it will make your figure wider. You can try to wear kappa clothes, because they are all slim and tailored, and the material of the clothes contains elastic lycra ingredients, which can help you look slim and handsome!
Besides, you should wear sportswear with vertical stripes instead of horizontal stripes. Similarly, vertical stripes can make you look longer.