I think all of these girls deserve to be Disney Princesses, but she deserves it most. I might as well explain why I picked these girls.

Esmeralda - I always thought she was a Disney Princess because she was featured with them when I was a kid.
Kidagakash - Princess of Atlantis
Megara - Her love interest is Prince of the Gods and she sings in her movie.
Alice - Third leading lady created by Walt Disney.
Eilonwy - Princess.
Mei/Su/Ting-Ting - Princesses and they sing.
Charlotte - Mardi Gras Princess.
Melody - Princess and sings.
Giselle - Would have been added to the line up if Disney wouldn't have had to pay her actress royalties for her likeness.
Tiger Lilly - Daughter of a tribal chief, like Pocahontas.

Been thinking this since I was six.

I think Meg, Alice, Lottie, and Wendy.

and another one of those questions, which asked over and over and over.....again..

And Esmeralda.

Or Kida, Megara, Giselle, and Eilonwy. But "no" for Melody, Charlotte, and Ting-ting, Mei, and Su.

also Giselle, Eilonwy, and Tiger Lilly

For the same reason Mulan is.
Her actions make her a princess, a real princess.

Kidagakash - not enough princess-y looking to look fine in the line although i love her.
Eilonwy - she is a princess but from a very unknown movie so no one will even know who is she when they'll look at the line
Megara - i think the style she's drawn will look wierd next to other princesses.
Esmeralda - um i guess she could but her movie is very underated and not popular.
Giselle - not even a fully animated character
Melody - too young and shity sequel character
Charlotte - they will never add her since one character from her movie is on the line, it's like...... wierd to have two characters from the same movie in the line xD
Tiger Lilly - not even the tritagonist of her own movie
Alice - too young
Ting-Ting/Mei/Sue - more shitty sequel characters

Since Meg ended up with a demi-god who is a son of the king of gods I think it sort of does make her a princess. I think Esmeralda deserves it too, but it would be rather weird.

Well to me this makes sense because Mulan is already in the line up and she isn't even technically a princess. I think it would be cool to have multiple characters from the same movie in the line up.

meg !!

Also Kida and Melody

Definitively, she's the kind of girl we all want to be.

or Alice, Meg, Esmeralda or Charlotte

And Megara

I LOVE Meg!!! (Or Esmerelda)

Just because she is a princess and deserves more attention. Also, Esmeralda, Alice, Megara, and Jane from Tarzan (if she was added to this list.)

I think a few of them deserve to be princesses.

Kida, since she's the princess of Atlantis. It would be cool to have an Atlantian princess in the line up.

Eilonwy, since she's technically a princess, same with Ting-Ting, Su, Mei, Melody and Tiger Lily.

Giselle, since she got ripped off from becoming a princess. She would've been one if it weren't for the fact that Amy Adams would've had to be paid for using her image on merchandise and what not.

Charlotte, since she was technically a princess, even though it was only for Mardi Gras, but it was still something, right? Plus, it's been her dream to become one.

As for the rest, just because they're pretty and heroic doesn't mean they should be princesses. I mean sure Meg ended up with a God, but that doesn't mean she should be a princess. Gods and princes are not the same. Alice is just a simple little girl. Nothing more. Esmeralda ended up with the captain of the guard, who's not a prince.

That's just my opinion though.

And Eilonwy, and Esme.

The obvious choice, Tiger Lily. The list boys even state when they're captured that they don't have their princess. Besides, the only ones I recognize are Alice, Meg, Esmeralda and Kidagakash. All others are after my time.