You're looking for a pair of high-waisted denim shorts or a button-up shirt dress with belt loops. Here are some options from different brands that might fit your needs:

1. High-waisted denim shorts by Topshop (https://www.topshop.com/us/en/denim-shorts-with-high-rise)

2. Button-up shirt dress with belt loops by H&M (https://www.hm.com/gb/product/13576?article=13576-A)

3. High-waisted denim shorts by Zara (https://www.zara.com/us/en/denim-shorts-with-high-rise-and-tie-belt)

4. Button-up shirt dress with belt loops by ASOS (https://www.asos.com/women/dresses-and-jumpsuits/shirtdresses/dresses-and-jumpsuits-with-waist-detail/prices-drop/2043