Leonardo DiCaprio a no-show at 'Titanic 3D' premiere

James Cameron's 1997 tearjerker "Titanic" is getting a 3D theatrical release come April 4, and to celebrate, the majority of the flick's stars hit up the world premiere in London on Tuesday night - except for Leonardo DiCaprio.

A source told amNewYork DiCaprio missed the premiere because he's shooting the film "Django Unchained" in Lousiana.

Among the stars who did show were Kate Winslet and Billy Zane.