This just goes to show that very few people in this kind of music business know real art. I'm not here to call out Rihanna for copying some boorish bint complaining about plagiarism whilst neglecting the limitations of sexual posing; if Rihanna's copying anyone it's Stanley Kubrick and Malcolm McDowell.
Odds are she thought the looks was good and never gave any real thought into the actual character she's really plagiarising, nor any of the connotations that go with the character.
http://1.bp.blogspot.com/-LT-qRFxras...McDowell+1.jpg
http://wakeywakeynews.com/wp-content...2/rihanna2.jpg
The eye make-up, the bowler, the cane... I just don't see how she's trying to fit the character into the video or the song though? It's honestly like she just wanted to look edgy and reinvigorated a once-considered socially unacceptable piece of post-modernist cult fiction in order to do it, without once concerning herself with just who the character is, what he stood for, or how his character fits into either song or video.
Rihanna's US fans might not be aware of this character, but her UK fans, where 'A Clockwork Orange' was a hugely popular book and film, are just as important and should make the connection, really.