Lily James and The Crown star Matt Smith began dating in 2014 after meeting on the set of Pride and Prejudice and Zombies.
And now, rumours are rife that the loved-up pair could be heading down the aisle, thanks to Lily sporting a huge diamond ring on her wedding finger at the BAFTAs.
The Downton Abbey star stunned as she walked the red carpet in a strapless black Burberry ballgown, which she paired with a show stopping belt.
She also wore dazzling diamond earrings and a bracelet, but it was the huge ring on Lily’s finger which demanded attention.
Lily made an effort to ensure the gorgeous piece of jewellery was on full display as she held her hand on her hip and held up her hand numerous times.
The 28 year old actress was at the ceremony having starred in The Darkest Hour which is up for nominations.
Chief Executive Amanda Berry greets Prince William and Kate Middleton at the BAFTAs [Getty]
Former Doctor Who star Matt did not accompany his girlfriend, but the pair recently put on a loved-up display on the FROW of the the Burberry show during London Fashion Week.
Last summer Lily silenced rumours of an engagement, telling The Sun On Sunday: “We’re not engaged yet. But it’s going very well.”
Also, when introducing Matt’s sister Laura Jayne to a person at an event, the star was heard saying: “I’m dating her brother, and hopefully she will soon be my sister-in-law.”
While Lily didn’t mention Matt by name in her Instagram post on Valentine’s Day, she told her followers to “love your person.”
Sharing a close up selfie, the Cinderella actress wrote: “Happy V day . Love yourself . Love your person. Love love love.”