Katie Holmes, left, and Tom Cruise
U.S. film star Tom Cruise says he proposed to his girlfriend, actress Katie Holmes, atop the Eiffel Tower early Friday, in Paris.

Cruise said he chose the Paris landmark because it is "very beautiful and romantic."

Katie Holmes was wearing a large diamond engagement ring when the two appeared at a news conference on Cruise's new movie, War of the Worlds.

Both deny speculation that their romance is a stunt to promote their films.

It will be a third marriage for 42-year-old Cruise, whose former wives are actresses Mimi Rogers and Nicole Kidman. It will be the first for 26-year-old Holmes, who currently stars in Batman Begins.

Some information for this report provided by AP, AFP and Reuters.