The 66-year-old actress, who is 28 years older than the 'Titanic' star, revealed the Hollywood heartthrob was so nervous about locking lips with her for the new Martin Scorsese movie that it took him a while to get into his groove, reported Contactmusic.
"Unfortunately, with the kissing he took a while getting used to it. So I was like, 'Try, try again'. There were 27 takes!," said Lumley.
"I do play the National Treasure card at home. Everything is done for me at home. I love the words National Treasure as I have been banging around the block.
"It is like looking for a parking space -- you go round and round. You do good parts and bad parts. People remember you and you do more shows. You are like an old car and people still like you and say, 'Oh look, it's the old car'.