I wear a plus size US 22/24, what size would fit?

None! I can wear anywhere between 20-24 depending on what it is and I ordered the 7x and it didnt fit. Maybe if laced past fabric in the back for the "modesty pannel. But dont want to go that far

Does it squeeze your waist to make you have somewhat an hour glass figure?

Yes. Mine came with the ribbon strung straight down, so I had to restring the ribbon to get that shape. Makes all the difference.

When will the xs size in black be back in stock ?

Hi friends,thanks for interested in our products,for this item with XS,we have shipped to amazon warehouse,it will be in stock in 1-2 weeks

Does this show under clothes?

Hi friends,thanks for interested in our products,it depends on the clothes,if the clothes is too thin or too short,it will see through,but normally,it cannot show under clothes.