Yugoslavian native best remembered to American audiences for having played in two JAMES BOND movies:
FROM RUSSIA WITH LOVE (1963) and
GOLDFiNGER (1964)
In FROM RUSSIA WITH LOVE she was cast as the girlfriend of Kerim Bey (Pedro Armendariz) and was in two scenes.
In GOLDFiNGER, Regin was in the pre-credits scene where BOND watches her perform in a third world night club just a bomb (that he'd placed) goes off nearby. He then follows her to her room where she's taking a bath. Initially unknown to him, it's a set-up and there's a would be killer waiting for him. As BOND is kissing her he sees in her eyes the reflection of a man creeping up behind him and turns, using the girl to take the hit.