Actress Keira Knightley says she likes to wear a hat to disguise herself when she goes out.

The 29-year-old confessed on ITV's show "Lorraine" that she enjoys sporting some headgear while stepping out with husband James Righton, reports femalefirst.co.uk.

When asked if she puts a hat on to disguise herself when she goes out, she replied: "Yep. That is exactly it, you can hide in a crowd quite easily. It's lovely. I love it. (We) can argue about who is doing the shopping. It's great."

Talking about her latest film "The Imitation Game", Knightley admitted that she wasn't as endeared to the cardigan and shoes that she had to wear for the film.

"It's all in the cardy (cardigan) and the shoes. The shoes were uncomfortable, that helped, and the cardy ... there's something about that really heavy, itchy knit."

"It was so thoroughly itchy. I suffered for my art, I suffered for my cardigan," she said.