Can anyone tell me how the sizing on the dresses in BBB works? I understand they come in 7/8 and 10/12, but am not sure which size would best fit my daughter. She is about 53" tall and on the skinnier side at 58 lbs. I am specifically looking for the fit of the Elsa dress, as this is the one she wants (I'm still waiting for it to come in to stock at the Parks for more than an hour so I can order it to be sent to Dallas, but that's another rant...; I would like to at least get the correct size if I ever do find it!!). Can any of you that have the Elsa dress from the parks or Disney store let me know what size you bought and what height/weight your daughters are? I don't want it to be huge on her (especially the sleeves) but I also don't want her to be practically growing out of it if I get the 7/8). Also what is the retail price of the Parks Elsa dress? I know the shipping will be about $20!! Thank you!