Sam Smith has 'huge' face says Riff Raff in Twitter row
As rap feuds and Twitter trolling go, telling someone their "face is super huge" is probably quite mild.
But that's the insult that's been thrown at Sam Smith after he chopped Riff Raff out of a photo on Instagram.
Riff Raff is the guy that accused James Franco of imitating him in the film Spring Breakers.
He also appeared on the MTV red carpet with Katy Perry, where they channelled Justin Timberlake and Britney Spears circa 2001 by wearing double denim.
Later on at some point during the Video Music Awards, where Perry's Dark Horse picked up the prize for best female video, they posed for a picture with Sam Smith and Charli XCX.
The photo made its way on to Smith's Instagram page, but only Raff's leg and fingers could be seen.
It would be fair to say that Raff was not happy to have been left out and made his feelings clear on Twitter.
He has since been posting links to his website and Perry's single, This Is How We Do It, on which he features.
So far Smith has not made a comment, either through his publicist or on social media.