Matthew McConaughey could have starred as Jack Dawson in "Titanic," but a new excerpt from a late producer's memoir claims he refused to drop his accent during his audition.

A new book has revealed the real reason Matthew Mcconaughey lost the lead role in "Titanic" to Leonardo DiCaprio.

Regardless of the Titanic story, McConaughey has built a highly successful career, including winning an Oscar for his performance in Dallas Buyers Club in 2014. Though his Southern accent is a well-known trademark, the actor has been able to tone it down for several roles, such as the Buster Moon character in the Universal Pictures movie Sing.