If you have gone from straight up and down athletic to a curvy shape then the key advice I can give you is fabric, fabric, fabric. You mentioned in your full email to me that your wardrobe staples of cotton tunics and skinny jeans aren't working for you any more. This is most likely down to a fabric issue.
Straight body shapes look great in stiffer fabrics - the clean crisp lines of things like denim and cotton echo the neat lines of your body. However, if you try to put these fabrics over curves, you often find that they will pull, feel tight or look messy or show lumps and bumps - these fabrics are just too restrictive over curves.
Curves look best in soft, draping fabrics - think anything with a Lycra content, and Jersey really is a curvy girl's best friend. These fabrics will skim over your new curves, and more importantly you should feel comfortable!
For casual style, if you feel lost without jeans try a soft denim with a high stretch content, and look for styles that are higher in the rise which will stop your new-found hips from feeling 'bulgy' I love M&S Roma on curvy girls and often recommend them to my curvier clients!
For those weddings that you have coming up I would suggest a lovely draping jersey dress - if you can find a wrap style then that is fantastic as you mentioned that you are still losing some baby weight, so this style dress adapts to your changing size. Here are a couple of outfit ideas, hope you are having a fabulous time with your new baby, and that you learn to love your new curves!