Post pregnancy weight loss

My little one is 10 weeks old and although I've lost 7kgs since he was born, I'm still 9kgs heavier than I was when I fell pregnant. I'm keen to know how everyone else's weight loss is going? How long does it take to get back to "normal" or as close to normal as possible? I hate not fitting into my summer clothes now that the seasons have changed and I don't know if I should buy bigger clothes or wait and hope I lose the weight soon