I feel like you can never go wrong with a pair of skinnys, knit jumper and a white shirt; especially if you keep it 'monochrome'. My tips for this look are: find a nice chuncky knit that its not too fitted but also not too loose, a nice cotton shirt (mine is from Uniqlo and personally i think they make the best 'basic' shirts ever) and your skinnys should always feel comfortable enough (they are like my second skin). Also, I dont know if its just me but Ive heard a few people saying: 'Oh no! You cannot wear navy and black together!'. This is a very old 'fashion rule' that I have no idea who created but it is absolutely false, I think when it comes to colors you can pretty much mix whatever you want, it should be just logical; so don't listen to any of these absurd 'fashion rules'.