A dark red mini dress combines large long sleeves and a V neckline with a short, curved overlapping skirt edge here. The legs remain bare between the hem and pale, clear-looking shoe straps. The shoes have clearly visible heels. Unlike the two black crops, this picture shows the complete lower combination. The crossed-leg pose does affect how the skirt edge and the space between the legs appear at this moment.
Compare one version with the same shoe colour and another with dark leg coverage. Begin with the existing shoe where possible rather than exchanging every lower item at once. You can then identify the difference made by the tights alone. Add a closed dark shoe afterwards if you prefer that finish as well.
Check the overlapping hem with feet side by side and while sitting. A curved overlap does not explain the actual fastening construction. Ask to see the opening on the available dress and test it during movement, matching coverage to the skirt position you will really wear.