While the majority of the 89th Academy Awards took place without a hitch, the final announcement of the evening - the coveted Best Picture award - was an unprecedented disaster.
Presenters Warren Beatty and Faye Dunaway announced ,” Beatty explained.
The 34-year-old cosied up with her new fiance Jessie Plemons at the Santa Monica ceremony.
Her 28-year-old husband-to-be looked smart in a two-piece suit, shirt and tie, of different shades of grey.
The couple - who also stared in Fargo together - confirmed their engagement last month.
She debuted her stunning diamond ring during an appearance at the Palm Springs International Film Festival.
Kirsten's latest film Hidden Figures is up for three award's in Sunday's Oscars, including Best Picture, adapted screenplay, and supporting actress for Octavia Spencer.
Dressed in a V-neck shirt, trousers and loafers, his ankles evenly tanned and his shoulders gym-toned, he looks casual but immaculate, an expensive version of himself, an object lesson in the Los Angeleno art of maximising one's resources. 'If you look at him on screen, your eye automatically goes to him. And very few actors who have that also have the guts to pursue the movies they want to do, rather than take the dream machine offered to them.
If I do this for 10 more years I'll be shocked.' I stare at him to make out how serious he's being.
She may not have been up for any awards on Saturday.
But Kirsten Dunst was proudly showing off her new prize at the Independent Spirit Awards.