Michelle Williams has revealed she and her Blue Valentine co-star Ryan Gosling posed for wedding photos together and then burned them, to prepare for the film.
The 30-year-old actress and mother to four-year-old Matilda, whose father is the late Heath Ledger, told how Derek Cianfrance, the director of the romantic drama about a young married couple in difficulty, made them pretend to be in a relationship and then 'break up'.
Michelle explained: "Derek the director set up this space for us, the house that we were shooting in, we walked in and he said 'This is your house now make it a home.'
"So we were allowed to decorate it and hang pictures and paint walls and we went and got our pictures taken at a family portrait centre, and stuff like that.
"We also had our wedding pictures taken and Derek did this ceremony where he put them in a wheel barrow with a bunch of fireworks and we set them on fire.
"So that's what we set out to do, we created this great thing between us and then we set out to burn it down."
But Michelle revealed her wedding picture with Ryan burnt into a shape of a heart.
She said: "The amazing thing is it didn't really burn, it burned into the shape of a heart with our faces still intact so we couldn't quite kill it, which is why I think they still get back together, but that's just me."