The 34-year-old actress is rumoured to be engaged to her Fargo co-star, Jesse Plemons, a source close to the couple confirmed to ET on Thursday.
Entertainment Tonight reached out to Dunst and Plemons' reps. Neither responded to emails for comment.
Although some reports claim the 28-year-old actor proposed to Dunst over Golden Globes weekend, it appears the exciting moment may have actually happened earlier.
The blond beauty was sporting a stunning sparkler -- an oval-shaped diamond set on a gold band -- on that finger at the Palm Springs Film Festival on Jan. 2.
*Imagine a Nigerian MIL hearing that her 28 yr old son has given engagement ring to a 34year old babe....LOL