Is this suitable for a nikkah or walima? Or more casual?

Not sure what nikkah or walima is but i wore this to a very fancy India wedding. Very dressy and received a lot of great comments. It is not casual. It wasn’t true to size by USA standards. I’m an XL size, got a XXL but it fit like a Medium. Had to do major alterations .

Can I buy it and you sent it tomorriw

It is shipped from India. So there was a long wait to get. Which is why i had to do alterations because there was no time to exchange for larger size.