Little background.
-We are a TV free family (a few occasional, select DVD's/movies here and there)
-I'm a SAHM and Dp works from home, so we spend a lot of time together as a family.
-dd is 4.5 and started a Montessori preschool in September. She attends 3days a week, 3 hours a day and seems to enjoy it.
-I am very conscious of the pressure placed on females to look a certain way. I do not talk badly about my appearance or weight.
Here are a few comments that dd has made recently (past few months) that has me feeling perplexed and to be honest, sad.
"I wish my hair was straight. Curly hair isn't as good as straight hair."
"My shirt isn't as nice as _______ is."
"_____ has a better face than I do!!"
"I don't have nice toys like _____."
"I have to wear pink or _______ wont like me."

I just don't get it. Is this normal??? I just cant believe that a 4 year old is saying this! When I was putting her to bed tonight we read a book about a little girl that was going to bed. It was basically pics of the little girl getting PJ's on and doing her whole bed time routine. After I was finished reading the book to dd, I made a comment about the last page in the book, how the room looked nice with the moon shining in, etc. And then dd starts with "her room is better than mine, my room is smudgy and drudgey. All her toys are better than mine." I point out that dd has things in her room that the little girl in the book doesn't have, and how most children would really love to have a room like hers. I also mention how we should be thankful because some children don't even have beds, etc. Then she flips to the page of the girl putting PJ's on " but I don't have pajamas like that, mine are yucky!" and she flips to the page of the mama helping the little girl bathe, "I don't have hair like that, that hair is better!"
At this point I'm feeling upset. A mix between feeling sad because I feel she doesn't realize how wonderful her things are, sad because this much focus is on "things", and sad because I feel the genesis of all this is low self esteem....and she's 4! And how did this happen!?!
But that wasn't the end of it, she flipped the page again, to the page of the girl changing socks and said "and look, her socks are normal and clean. Mine are stinky!"
Just let me say, her socks are not stinky.
I just don't understand. I honestly don't know what to think.

I dont think the comments about the book would have set me off if it was just that. Its just everything combined.
any thoughts would be appreciated