Yes, I experienced the same thing. Some of my tops are now too small to wear due to the increase in chest, back, and arm muscles. I didn't have a lot of fat in these areas to begin with so I'm pretty sure it's mostly muscle gain and I don't expect to become smaller in these areas. I've completed all 7 stages of the program. If you have a lot of fat in these areas, your results will be different. I would keep at it. Stick to the program. And, after only 10 days of lifting you're probably experiencing temporary water retention and not increases in muscle mass (size).

I would rather have strong muscles & bones and just buy larger tops & jackets. The health benefits are worth it to me. Plus, I often get compliments on how great my back looks. Bonus!

Weight loss is 80% diet, 20% exercise. Lifting weights helps to minimize muscle loss while operating at a calorie deficit. You want most of your weight loss to be fat, not muscle. Good luck and stick with it!