Fifty Shades of Grey is the most successful R-rated movie for Universal

Fifty Shades of Grey has been in theaters around the world for three weeks and is already Universal Studios' highest-grossing R-rated film ever.

The movie has earned $338 million worldwide and is expected to reach half-a-billion-dollars later this week. Universal's previous highest-grossing R-rated film was 2012's Ted which earned $330 million. Deadline Hollywood