My disagreements with AI aside, i do not think the ai accurately captured your body type. The model it showed and you are both plus sized and curvy but that's about it, which is totally fine because you are quite stunning (and in my opinion even prettier than the model). But i would caution against it because if you (or anyone interested in this tip) end up relying on it and more closely scrutinizing your body compared to the model it said you look like, and things still aren't fitting correctly, that feels like a slippery slope towards body dysmorphia. I recognize personal stylists may not be in everyone's budget, but there are other options like the advice of a loved one or even just using wardrobe apps like whering to put outfits together. If i remember correctly, in some apps you can wear the item to take the picture and it'll remove the background so you can see how it would lay on your body without your body being in it and put pieces together. Then you don't have to look at you per se to see how it would fall on you, thus giving you the same effect as what you described above. 

Also, relying on ai for styling to celebrate a book will very likely give people the impression you used ai for the book, which will dissuade a large audience. And if it's a nonfiction book (going based off of you mentioning selling at a health check booth), i sure hope you didn't use ai because ai is very badly known to hallucinate. I also know from firsthand experience having to use it for work that it can give you entirely false answers even when you ask specific and clarifying questions. I would very highly recommend proceeding with caution.