SINGAPORE - Rihanna's yellow gown at the 2015 Met Gala in New York lit a fire under the Internet's meme machine. The "omelette dress", as it was quickly dubbed, spawned images including one of the pop star in a frying pan and another edited to refashion the gown's 3m-long train into a giant pizza.

But, would using the red carpet images of Rihanna - which are copyrighted by their respective photographers and photo agencies - in this way have been legal here under "fair dealing" exceptions?