Synne, as others have said, your outfits always look interesting and unique but if they still aren't feeling right to you, then that is frustrating. I suspect the baby may have something to do with it! It is a role change. A life change. And there are body changes, too. So we sometimes focus dissatisfaction on clothes (something we imagine we can control) rather than our lack of sleep or frustration or elation or whatever.
Still...I really do know what you are feeling. Several years into my time on YLF I felt very similar. I had a lot of nice pieces and I could make outfits of a sort, but either they didn't feel like "me" or they didn't feel truly stylish.
I'm not sure what changed...I think in part, I gave up a bit on some of my aspirations and recognized I was never going to be that woman who looks great and feels great in X type of outfit. Also, my weather or activities would not allow it. So that means -- time to adapt the style aspiration and get real.
And then I also learned what I needed to make my fairly classic style feel "me" -- in my case, it's a bit of energy, dynamism and brightness or playfulness, which might come through in a variety of ways -- juxtaposition, pattern mixes, colour, shine. There needs to be some energy to the look or it fails on me. So that is a "getting to know your style type" thing -- which I studied analytically, yes (through the style systems) but also recognized much more deeply by feel. What feels right?