u/Educational-Room-813

I’m looking for a book my sister read in elementary school (early to mid 2000’s) about a plus sized princess who was in an arranged marriage. The princess was from a vibrant landscape, full of agriculture and food, and was married into a kingdom in a barren land. Sis remembers a bunch of descriptive foods that the princess was missing and what she was eating on the journey, but she never got to finish the book. I know it’s a long shot with this description, but if anyone recognizes anything, I’d love some help! TIA!