DiCaprio at the premiere of The Beach

"He is my fiance," said Bundchen.

"I never went public with it before because I don't think it's anybody else's business.

"I don't like talking about my private life."

Hailed by Rolling Stone Magazine as "the most beautiful girl in the world", Bundchen added that DiCaprio was "a wonderful person, with a big heart, very wise, intelligent and sensitive".

Challenging role

DiCaprio won his first Oscar and Golden Globe nomination for his portral of Arnie in What's Eating Gilbert Grape in 1993.

He took equally challenging roles in Basketball Diaries and as the tortured poet Rimbaud in Total Eclipse.

Stardom came with his role as Romeo in Baz Luhrman's updated Romeo and Juliet soon followed by the role of Jack Dawson in Titanic.

The 20-year-old model also said that they had not set a date for the wedding as yet, since they were both so young.

When asked whether her fiance had any faults Bundchen answered: "Not that I know of."