Lana Del Rey has undergone a major hair transformation ... and Lana was pictured wearing a huge diamond ring on her engagement finger at the Billboard Women in Music Awards last March.

Lana Del Rey looks slimmer than ever after debuting ... and Lana was pictured wearing a huge diamond ring on her engagement finger at the Billboard Women in Music Awards last March.

Lana Del Rey's Born to Die is on the rise on five Billboard charts in America at the moment, including nearly hitting the top ...