long sleeves and even elbow length sleeves don’t look good on girls with heavier arms- i’m speaking from personal experience here. it has to be cap sleeves or sleeveless if you tone your arms.
for my mehendi gharara, i went sleeveless after much arm working out and toning. granted i didn’t have a dupatta on my head, but if i could redo my wedding outfit when i did have my dupatta on head, i would have made it sleeveless too. the whole look was a lot more flattering in hindsight than the short sleeves i had- you have to go with what suits your figure. as for dupatta on head with a sleeveless outfit, its not a question of modesty, so why not? i’ve seen brides rocking it and i don’t find anything odd about it.
I think sleeveless without a dupatta looks amazing and so elegant. It’s honestly just the donning the head piece bit that doesn’t agree with me. I don’t think short sleeves are flattering either actually!