HMF similar outfit but cheaper!!

I’ve gained a lot of weight in the last few years and finally went out shopping to stores that i know would have in-store sizes for me to try on clothes and get a feel of what i like besides just jeans and t-shirts.

I found this set on a mannequin at Lane Bryant and really liked the way it looked on me. I know that I can find a good denim jacket like this at old navy or somewhere similar. The plain white dress was very light and flowy. If I could find a version with perhaps cap sleeves / cold shoulders / something that covers upper arm area, it would be awesome! The dress, iirc, was over $100. I am not looking to spend that kind of money, unfortunately. It seemed well made, so this is nothing against the garment, just the price tag.

I also really liked the belt, it was stretchy and worked well to create some sort of shape in the dress + accessorize it naturally. It was about $60, which I just can’t rationalize spending on a belt I may just wear with this one dress.

Any help to find a dupe/something similar to this without breaking the bank that isn’t shein/cider/dropshipped/etc. I am on the bigger size, about 20-22. Thanks in advance!!