I absolutely love this prom dress. Its pretty much everything im looking for. But I need long sleeves.

I 100% need a prom dress with sleeves. I dont want to wear a cover up, or a blouse, or gloves. I have selfharm scars, and while I am not ashamed of them, I dont want to show them off during prom. Covering them with makeup will not work, and they go pretty high up (so i dont think gloves will work!)

Can anyone help me out? Maybe find a similar dress? Or a company that would be able to make sleeves, or provide extra fabric?