(Fits 12-ish) Pink Lace/Sequin and Tulle Ballgown with Cap Sleeves, Maybe Custom

Size unmarked (seems to fit 12ish?) Pink Lace/Sequin and Tulle Ballgown with Cap-ish Sleeves - Possible Custom Job Measurements in pics, no stretch, heavily lined. 20" bust and 17" waist, free hip. Due to the cap sleeve style there is not really a shoulder seam to speak of but I can attempt a measurement if that is needed. EUC-- There is some gray fuzzing or lint on the inside of the back hem edge, but this is not visible unless you flip the hem over, so I didn't even bother with the fabric shaver on it since I didn't want to risk it munching on the lace itself. I kind of love these mystery gowns because I start to imagine what stories might be behind them. My best guess is this was custom made for someone for a special occasion or performance, so there was no need to put any kind of tag inside it. Of course it's possible there was a tag and the owner was a sensory kid who removed the tags to avoid irritation. It does feel like polyester so I would probably hand wash whenever the need arises. NO MODELS-TRADES-LOWBALLS I videotape all items being packaged up and may also affix a plastic tamper-proof tag you can cut when you first wear it.