everyone's different. there are peoiple who can lose a pant size pretty quickly and then there are people like me who lose it everywhere but the hips and around there(lol). i haven't lost a pantsize and i've lost up to 18 pounds(gained two back but i'm taking those off again this week).- but i also lose a lot of inches in my waist area so my shape is getting better. it just depends on where you lose. by the way the time in which i did that so far is about 2 1/2 months. good luck- i want to lose one too!