How long did it take you to lose the baby weight?

Alison
I'm 6 weeks postpartum- I had a c section and just wondering how long it usually takes to get back to pre-pregnancy weight. I'm reluctant to buy any clothes to fit my slightly curvier figure, but am kinda getting sick of wearing sweats all the time! Any tips are appreciated too!
Pre-pregnancy: 115 lbs
40 weeks pregnant: 146 lbs
6 weeks postpartum: 124 lbs