sadly the princess dresses are out of circulation at the present time, that does not mean that they will never be released again just that right now they can not be bought.
Trading or gifting is the only way to get one at the moment.
I am not sure what princess items I have left but will look and I would be happy to gift your daughter what ever I have extras of.
If you do not want to post their ids I understand, send me a PM and we can arrange a meet.
the princess dress are now rare but they come in blue pink and gold. i just got one and i was literally jumping up and down. it was like an early 13 birthday present!!!