I am 37 and have over the years and post kids, worked out what looks good on me.
Can you go shopping kid free with a good friend whose style you admire? Also start looking on Pinterest as there are tons of ideas on there. Who di you like the look go? I love the way Kate Moss, Claudia Winkleman, Mary Kate Olsen, and Miranda Kerr look. Have you got a style crush?
I have something of a uniform that works for me
Casual-
Skinny jeans/trousers, breton top-must be wide neck, or plain slash neck 3/4 sleeve plain top, drop hem jersey tops, or boxy fit jumper, long line vest worn under everything, converse or brogues or biker boots, relaxed slouchy blazer or parka. I also have a wool cape coat, and an oversized car coat for when it gets colder, a wooly hat and lots of scarves.
Work
Jersey body con or wrap style dresses, wool tights, wedge shoes, blazer. I have all of these items in black, navy, claret and grey. They all mix/match. Add beads or a scarf.
Dressy
Beaded top, open neckline, black skinny tailored trousers, leather jacket or blazer. Hair up. Black mini skirt, sparkly open work knit top (vest under), a couple of dresses leopard print court shoes, or lace effect courts.
I have one expensive tan leather bag, nice ray ban sunnies and always have minimal makeup on which makes me feel put together.
I am trying for the "off duty model look"!!
I have a 4 yo DS and 2 yo DD, and by no means a model figure!
Shops-
Zara
Topshop
Primark
New Look
Mango
Whistles