I am not a mom, but right now I am spending a lot of time at home as I am in between careers. My suggestions:
If you like jeans, buy yourself a chic pair--one that makes you look GOOD! No 'mom jeans' with the huge pockets, NO elastic wasteband. Jeans with stretch are always a bit more flattering!
Buy tanks/tees that you can layer! Buy warmer colors for fall/winter and layer. Worn with the cute jeans and simple long beaded or chain necklaces--so chic! Gold or silver hoop earrings with this look are simple elegance.
Get 2 nice zip-tops. Juicy makes them in cashmere, terry, and velour. Don't get the bottoms though--I have seen too many women make the mistake of thinking that their bottoms look great, and they wear thongs with those Juicy sweatpants. Result: a little too much butt. A "NO"! Just get yourself a top to wear over the layered shirts and the jeans.
1 pair of boots: leather, platform of lower, whatever you are comfortable with.
1 pair of platforms: hey, they are IT for this season. Steve Madden and Jessica Simpson have some that look expensive but are reasonable.
1 pair of chic 'kicks': LAMB by Gwen Stefani are some cool sneakers to wear with this cool look.
Hope this helps! Rock your inner hot mamma!