Spot the difference

Due to cam's extensive weight gain since he was born we have been trying to work put if he is in proportion. Trying to measure the length of a baby can only be compared to trying to measure the length of a snake when it is covered in oil and wriggling, completely impossible. Daddy came up with an ingenious idea if using the change mat. It is hard to believe there is only 7 months between these photos, seems like a blink of an eye and a lifetime all at the same time.
By the way he is in proportion and 91% for height too, yay!