Michelle Williams kept Valentine ring

Michelle Williams has kept the wedding ring she wore in 'Blue Valentine'.

The 30-year-old actress - who was romantically linked with Ryan Gosling, who played her husband in the film - enjoys keeping mementoes from her movie sets to remind her of experiences when she returns to her normal life.

She said: "It's nice to keep mementoes when you're back in your home life, where it's all about cooking and laundry.

"(The wedding ring) is on the windowsill, in front of where I was the dishes. I like these little things that only I know about."

Michelle - who has a five-year-old daughter Matilda with her former fiance, late actor Heath Ledger - also revealed she starts preparing for movie roles as early as possible as everything she does in her life seems to take longer for her than other people.

She added in an interview with Culture magazine: "Everything in my life takes more time than it takes other people. A 30-minute recipe for working mums takes me two hours. I have to wake up really early to feel I'm properly awake.

"That's a long way of saying I need time to prepare for a film so I don't feel like a phoney."