This combination of a dark purple crew-neck sweater and a navy suit oozes elegance and sophistication. The whole look comes together perfectly when you complement your ensemble with a pair of tassel loafers. As you can see, this look is a really savvy pick, especially for unpredictable fall weather, when the temperatures are falling. If you're in your 30s, pay attention to looks like this to add more seriousness to your wardrobe.