Motherhood maternity sizing

kerryholmes

I have a pair of motherhood pants from my first pregnancy (08/09), tried them on and they seem to fit well (a little room to grow). I'm looking online at motherhood.com and the size chart says I should be a small, but the pants I own are medium and like I said, are comfortable. Have they changed their sizing or do they run small? I never fit in an 8/10 but that's what medium is according to them. I want to order some with the bogo deal.