Rihanna thinks social media is "the death of all trends". (Pic: Vianney Le Caer/Invision/AP)

Rihanna thinks social media is "the death of all trends" and the second she sees an outfit or style hit the photo-sharing site she dislikes it and thinks it is out of fashion.

The 29-year-old singer thinks Instagram is killing the fashion industry, as she believes as soon as a popular style is seen on the photo-sharing site it is "too late" and she then dislikes the look. 

Speaking to The Cut about the fashion business, the brunette beauty said: "Instagram is the death of all trends. Once it gets there, it's too late. It's gone. I'm so over it. I can't; I can't deal."

The 'Work' hitmaker has revealed her fashion sense will vary because of her "fluctuating body type", and she has to "really pay attention every day" when she is getting ready to make sure she selects something that suits her shape.

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She said: "I actually have had the pleasure of a fluctuating body type, where one day I can literally fit into something that is bodycon, and then the next day -- the next week -- I need something oversized; I need a little crop here and a high-waist there to hide that part, you know?

"I really pay attention every day when I go into the closet about what's working for my body that morning. I feel like that's how everyone should go after fashion, because it's an individual thing. And then, if you take it further, it's like: What week are you having? You having a skinny week? You having a fat week? Are we doing arms this week? We doing legs this week? We doing oversized?

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"I love to play with silhouettes as well, but I think it's important to make sure that you wear the thing that works for your body the best, and that's flattering."

And Rihanna - who is currently dating billionaire boyfriend Hassan Jameel - has admitted she loves a "man in black" because she thinks the colour makes them look "so sexy and mysterious", although she doesn't like the socks and sandals trend.

Speaking about the outfits she finds attractive on men, she said: "I love a man in black. It's so sexy and mysterious; confident and secure -- all the things I love about a man. So, I'm into that.

"I'm from the islands, so we don't wear socks with shoes, especially sneakers. But it depends on the man. Like, I don't want to see my boyfriend wearing flip-flops when he's going to an event."