Perfect size and great quality but pants were long

For reference, I’m 5'4 and weight 65kg (if that helps) The sets is okay. My issue is really with the top part and the fabric . The fabric is a really thin than I expected and other sets I’ve purchase from the site. I’m usually a small or a medium. However, for this set I wanted a tighter fit so I went for a Small. Now, the bottom fits perfect and long enough to wear heels, but the top part does run on the bigger side in the arm side (you could wash it and dry it - Iooking a the type of fabric it might shrink but not in a good way). Also, you definitely need a bigger breast if you want the same look like the models.