As BOF said, I would like to be friends with you in RL (wish I'd 'known' you when I came down to Dorset over New Year, would have been great to have met up). I think we'd make good friends.
You are very attractive, if you weren't I wouldn't say it, I would just ignore this part, so I am not just saying it!!. I don't know how to make you believe this, but it's the truth. I looked at your profile a while ago, I can't remember what you had said on another thread, but something made me look and I was suprised how attractive you were (I think you were posting about your weight or a comment your DH had made... can't really remember, but I remember thinking ...BS, you are attractive!!! LOL
It says a lot to me that all but one of your photos are of your classroom/school, not any of your house, children, animals, OH etc. Now I know lots of people don't post those things (and I don't even have a profile page!!), but I noticed it last time I looked, before this thread.
When you go clothes shopping, is your DH laughing at you in a 'bloody women - so hard to please!!' kind of a way, or is he laughing at you getting upset/not being happy with what you see?? Big difference.
As for your daughter, you need to curb that behaviour right now. It is not acceptable for her to treat you that way, nor should you laugh it off. She is old enough to understand that it is wrong. I don't know her (or you really!!) so it's hard to say how best to go about that, but to be honest, if she were mine I would be telling her outright that I do not want to hear/see that kind of spiteful, nasty behaviour whether it is about me or someone else. End of. Be strong - she needs you to put some boundaries in place.
I know it's probably the last thing you want to hear right now, but I think you need to take a hard look at your relationship and listen to what the councellor is saying to you (I went to councelling with Ex and didn't want to hear what the C was saying to me, yet he was so right from the first time we met!!). To me (from admittedly the little I know) your DP is eroding any confidence you did have and has made you feel completely crap about yourself.... it's no wonder you are lacking confidence, most of us would be if we were being treat like you are/were. Has he really changed? It doesn't seem to me like he makes you feel valued, special, wonderful, amazing, like you are his world... if he's making you feel crap, it's going to be a hard battle to make yourself confident at home.
It would be so much better to be doing this over a bottle of wine