During the colder months, it can be a struggle to find an outfit that doesn't make you look frumpy, or worse - like you didn't even try. However, a midi sweater dress is a no-fail, flattering solution that'll still keep you warm as temperatures dip. Plus, not all are created equal: you can find a range of styles that are easy to throw on and pair perfectly with trendy boots, whether you opt for a striped number or one with a '70s vibe.