"Michelle Dockery's Heartwarming Wedding: A Downton Abbey Reunion"

Michelle Dockery as Lady Mary Crawley | Downton Abbey

Lady Mary and Matthew Crawley Sing Together | Downton Abbey

Downton Abbey's Dan Stevens EXPLAINS Why He Wanted To Leave..

Lady Mary's New Haircut | Downton Abbey

Mary and Matthew | "Convince Me Again" | Downton Abbey

Henry Confesses His Love For Mary | Downton Abbey

DOWNTON ABBEY Bloopers That Are Even Better Than The Show

Mary and Matthew's Wedding | Downton Abbey

The Proposal | Downton Abbey

Michelle Pfeiffer Reacts to Being Mentioned in Uptown Funk | The Graham Norton Show

"I Want Him to Be My Best Man" | Downton Abbey

Mary and Henry: 'You're the Boss' | Downton Abbey

Matthew and Mary's First Kiss | Downton Abbey

Matthew McConaughey and Hugh Grant Swap Iconic Movie Lines

Rose & Atticus Finally Get Married | Downton Abbey

Lady Mary's Vindictiveness Goes Too Far | Downton Abbey

Matthew Discovers Mary's Big Secret | Downton Abbey

Filming Downton Abbey's Weddings | Behind the Scenes | Downton Abbey

Lily James as Lady Rose MacClare Meeting the King of England | Downton Abbey