Mary prepares for her wedding.
Mary is glowing the morning of her wedding.
Mary poses with her mother and sisters Edith and Sybil before the big moment.
Matthew asks Tom to be his best man.
Mary has the bridal look down. Her vintage veil is held in place with a 45-carat floral diamond tiara (valued at $200,000).
Mary looks elegant in her '20s-style wedding dress. The long-sleeved cream gown features rice pearls and Swarovski crystals and took eight weeks to create.
Mary's veil has a train.
Mary poses with her bouquet of white Calla lilies in Downton.
Robert poses with his daughter.
Robert and Mary take a carriage ride to the church.
Robert walks with his daughter at the wedding.
Robert is a proud papa with Mary on his arm.
Mary poses at the church.
Mary before the veil was lifted.
Mary has a simple bridal makeup look with a bit of '20s flair.
Matthew lifts the veil.
The happy couple stands with Robert at the wedding.
The lovebirds share a sweet moment.
Matthew looks at his bride.
Matthew and Mary are elegant on their wedding day.
Ah, true love.
It is a serious affair.
But not too serious.
Mary and Matthew pose in their wedding best.
The cake is, fittingly for Downton, grand and over-the-top.