I think it's only natural... I've done exactly the same thing! I bought virtually nothing in the way of new clothes for the first few months, but as I have needed to buy some new clothes more recently, I'm tending to buy things that are a bit more roomy... I'm wearing a new skirt today, and I'm kicking myself for having stuck with the size 12 as it's kind of snug... should have gone the 14!

BW