I've seen girls try to copy this outfit(not to a tea) with street style so in a way it is but I'm not sure I'd say its an Iconic look for Rihanna I would say Only Girl hair, with a floral dress is more recognizable for her.
Two classic Rihanna’s looks, who could ever forget how good Rihanna looked in the ‘What’s My Name?’ video. Rihanna wears her famous cropped striped blazer which you can buy from missguided below. The blazer is great because it frames the body and accentuates curves and is definitely worth adding to the wardrobe.
When I read the title, the only thing I remembered was that she had on a striped jacket. No one thinks this is iconic. I wasn't even aware her stans did.