Originally Posted by RochesterKnitter
It is unlikely that you dropped, and then picked up, so many sts that the sweater got larger as you worked it.
The more likely scenario is that your gauge is off and/or your tension is very loose. Check the gauge on your, now finished, sweater and see if it is "true" to the pattern. You probably need to go down a needle size (or two) and/or make a smaller size (S not M, M not L) sweater.
Overall, a very nice job on your first sweater. The garter stitch ridges and deco at the top stand out, which means you got the hang of knitting/purling and changing between the two.
So i decided to measure the bottom and top of the sweater the chest area is right 22 inches but the bottom was 28 don't know how i managed that
Thank you on my stitches this one looks even neater hopefully this will come out looking much better.