The illustration of Winslet reclining on a sofa and wearing nothing but a diamond necklace is sketched by Leonardo DiCaprio's artist character Jack Dawson in the 1997 epic film.
The movie's director James Cameron was actually responsible for the drawing, which features the initials of DiCaprio's character and the date April 14, 1912 - the day before the Titanic sank.
Cameron's artwork is expected to be the star lot at Premiere Props' memorabilia auction on Saturday and Sunday.
A spokesperson for the firm says, "This is a wonderful piece of memorabilia (from) one the biggest grossing films of all time."
i want it :(