No going back now - it's official.
Buckingham Palace has just shared an image of the "Instrument of Consent", which is the hand-written document that records "Her Majesty The Queen's consent to the Marriage of Prince Harry and Ms. Meghan Markle."
Release Official Engagement Portraits
Millions of people around the world will watch the event on television and this is the final official consent before the big day.
According to Buckingham Palace, the "Instrument of Consent is drafted by the Crown Office and is, in the case of Prince Harry's marriage, hand-written and illuminated on vellum by one of a panel of scrivener artists retained by the Crown Office." Vellum, prepared animal skin, is used only for important state documents.
Prince Harry, 33, and Meghan Markle, 36, and preparing for the biggest day of their lives, which is now only a week away.
The Instrument of Consent is sealed with the Great Seal of the Realm.
Her signature, "Elizabeth R," is at the top of the document, which will be presented to newly married couple after the wedding.
In other royal news it has also been revealed that that Bishop Michael Bruce Curry — from Chicago, Illinois — will give the address at the ceremony.
Meanwhile, talk show host James Corden and his producer partner Ben Winston are both on the guest list for the wedding at St. George's Chapel next weekend.
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