This wedding dress is the Katarina Gown SP 17 style by Monique Lhuillier. I bought this dress in 2018, it was altered and dry cleaned prior to my wedding, but has not been cleaned afterwards as there were no significant dirt marks. It has been stored in a garment bag, so it does have wrinkles and would best be dry cleaned and/or steamed prior to wearing again.
I wore crinoline to create the look of a fuller train which you can buy quite inexpensively. This will not be included as I did not bring it back with me (we had a destination wedding).
Please feel free to ask questions prior to purchasing!