Aww your little one is a cutie, he looks such a happy chappy. I guess we've all had times when we haven't apprciated our figure/ body, if I could go back and give myself one piece of advice it would be to appreciate and love my body more. I remember being 11st at about 16-18 years old and wearing tiny clothes but still thinking I was fat and I've probably been dieting ever since too.
always make sure you take lots of pictures, I do even though I may not like myself in them, our kids see us differently to how we see ourselves and it's nice for them to have lots of pictures of mummy and daddy and them.
Christmas decoration shopping sounds fun, enjoy your day.