Her Downton Abbey alter-ego is forever facing the wrath of her sharp-witted and acid-tongued grandmother over her lifestyle choices.
But it would seem even the judgmental Dowager Countess would approve of Michelle Dockery's new boyfriend, as the couple cut a sophisticated pair while out and about in New York City on Friday afternoon.
Looking as though she had taken a few sartorial tips from her stylish screen character, Lady Mary Crawley, the 31-year-old actress looked the epitome of ladylike elegance as she headed out in the Big Apple with her new man, John Dineen.
Michelle and John were first pictured together last week, as they strolled around Venice exchanging romantic kisses.
The cute couple were introduced by Michelle's Downton Abbey co-star Allen Leech, who plays chauffeur Tom Branson in the ITV drama, and are already said to be smitten with each other.
"Hello tiny human"
Dineen, an Irish-born senior director with FTI Consulting, lives near the actress in Clerkenwell, Central London, and their romance is already going from strength-to-strength.
A friend of Mr Dineen told the Mail: 'John is also from Ireland and went to University in both Cork and Dublin before coming to London. He is very private and softly spoken but he has really been taken by Michelle. Allen is an old friend and appears to have played Cupid.'
Oh and then they went to a tennis game or something. bla bla bla
Dumb dumb dumb
Surprise!John Lithgow. So ~intense.