Hey! Have you looked into the cuts that are supposed to be the same as Alexa? Listed here. I'm not personally in your size range, so I don't know if they all fit identically, but they're supposed to be the same, with possible variations due to fabric.
The current version is Lily, which I think has some awesome colors! Past versions are Meg, Alexa, Sasha, and olivia. There are a few available on amazon (though not sold by amazon, so no free returns). Meg in 30GG, $55, 1 available; and Lilly, $55, 2 available, swan print. Also, Lilly, swan print or Magenta/orange, $55.
Hope that helps!