Who said you can't make a fashionable statement with a laid-back ensemble? Draw the attention in a cardigan and black skinny jeans. The whole look comes together wonderfully when you introduce a pair of white slip-on sneakers to this ensemble. As you can see here, it's super easy to look awesome and stay comfortable when colder days are here, thanks to this ensemble. As a 30-something, you want to start dressing like a grown-up. If that's the case, outfits like this are ideal as inspo.