Knightley said she still gets regularly reminded of the famous moment from the holiday rom-com
Keira Knightley is still stopped in the streets and reminded of her greatest rom-com moment.
On Friday, Nov. 29, the actress revealed she recently came face-to-face with a group of construction workers holding up cue cards - just like her costar Andrew Lincoln did in Love Actually.
"I was stuck in traffic for ages recently and a car full of builders next to me started holding up the signs like in the movie," Knightley, 39, joked on The Graham Norton Show.
"It was creepy and sweet at the same time, much like it was in the film."
Mom of two Knightley, who is married to rock star Jamie Righton, was on the show to talk about her new spy thriller Black Doves, which involved her shooting multiple stunt scenes.
"Originally lovely Ben [Whishaw], who is the assassin, was shooting loads of guns so I thought, 'Great, I don't have to do much other than look 'spyee,' " she told Norton.
Related: Keira Knightley Recalls 'Trauma' of Constant Speculation She Had an Eating Disorder: 'It's Public Shaming, Isn't It?'
"Then on the second draft, I am shooting guns but still that's not too bad," she added. "Then suddenly I am doing knife fighting and Ju-Jitsu."
"So, we went from it being easy and lovely to a lot of fighting and a lot of training."
The PEOPLE Puzzler crossword is here! How quickly can you solve it? Play now!
Singer and actress Cher was also on the chat show and talked about her relationship with Sonny Bony, with whom she found fame as a singing duo in the 1960s.
"We had a strange relationship and when I learned that he and his lawyer owned everything, and I was just an employee, I said I wanted to be 50/50 partners otherwise I would walk," she told Norton.
"I didn't want to leave, but I couldn't be under that contract - I had no money," the music icon added. "There is no bitterness towards Sonny. I was angry with him, but I just couldn't be mad at him. We were friends until he died."
Cher added that she then sought out advice from TV actress Lucille Ball on how to get out of the partnership.
"I didn't know what to do and leaving was a hard thing for me," she said. "Lucy was on television and part of a couple, so I went to her, and she said, 'f--- him, you're the one with the talent!' "
Never miss a story -- sign up for PEOPLE's free daily newsletter to stay up-to-date on the best of what PEOPLE has to offer, from celebrity news to compelling human interest stories.
Related: Cher Reveals Next Album Is 'Probably My Last' During London Event: 'I'm Really Excited to Be Doing Anything Now'
As for her career, Cher was asked if she would release another album after she had finished promoting her memoir, Cher: The Memoir, Part One.
"We are starting to work on the final album when I get rid of the book!" she told Norton.
"I did a good job on the Christmas one and I am praying I can get through it. You're not meant to be singing at this age, and I hope that I will be able to do it and hit the notes."