Two gold evening looks appear together on a rocky outdoor setting in this reference. Both show upper detail and leg openings, but their lower fabric is arranged differently. One keeps a closer line with side draping, while a broad area from the other spreads outward to the right. The picture helps compare the distribution of space. It does not establish that any wider section is detachable or demonstrate movement across that ground.
If you like the extended area, ask to see the actual garment standing without the fabric held or spread. Walk and stop in a fitting room before considering a similar outdoor setting. Decide how much cloth you want to manage during the evening and whether a gathering arrangement is offered. Have any proposed method shown rather than assumed from the picture.
Keep the invitation and your route in the comparison. You may enjoy the gold colour while preferring the narrower lower outline, or choose greater width for a particular entrance. Describe those as separate preferences. The two outfits need not become one imagined model with every visible feature combined.