I have seen a few Disney Princess Threads talking about the heights of the Disney princesses. I am going to give my opinion based on myself and facts.

Tall;
Esmeralda: She's not an official princess, but yes, she is the tallest. It has been confirmed.
Pocahontas; She's almost the height as John Smith, who was a tall man. She was always drawn with really long legs.
Elsa: She is Norwegian, the oldest, and has always just seem tall to me, even when she was younger.
Megara; Meg has the seconde tallest boyfriend, and is around his neck. I'm going to count it.

Medium;

Aurora; Though they say she is the tallest, she just looks petite to me. I'll put her here anyway.
Anna; Anna is much shorter than her sister, but hey, she's still a Norwegian.
Cinderella; She's about even with me.
Tiana; Just seems taller than some of the others. Taller than Charlotte.
Merida; Merida has always seemed shortish/average, maybe she is short, but then again, she has two parents around 6 feet.
Belle; Almost short, but she's compared to a beast. Then again, she has a ridiculously short father.

Short:
Mulan; Mulan seems short, but she's around the same height as some of the men in the army.
Ariel; Ariel just looks short to me. Even in human form, she was tiny.
Jasmine; Short, but not the shortest.
Rapunzel; Rapunzel is shorter than everyone (except the children) in the village. I think it is to toon her innocence.
Snow White; Youngest, due to the voice, she hasn't hit puberty yet. I think she is the shortest disney princess.

Please tell what u think and add your own theories on height. Please do not judge to harshly of be rude. Thank u for reading!