Eminem and Machine Gun Kelly. Pictures: Bang Showbiz/Reuters

Celebrity feuds seem to play out in the media a lot. Most recently to was Drake and Pusha T, followed by Cardi B and Nicki Minaj, and now Machine Gun Kelly and Eminem's long-standing feud seems to be dominating headlines.

The pair have been sparring since 2012 when Kelly called Eminem's daughter, Hailie, "hot as f**k", but in a recent interview, Eminem revealed that the tweet is not behind the beef or the multiple diss tracks.

In the second part of the "Not Afraid" rapper's YouTube interview to promote his new album "Kamikaze" with musician Sway, Eminem explained: "The reason that I dissed him is because he got on - first he said, 'I'm the greatest rapper alive since my favourite rapper banned me from 'Shade 45,' or whatever he said, right? Like I'm trying to hinder his career. 

In one of the tracks on Em's "Kamize" album, called "Not Alike", the rapper take jabs at the 28-year-old hip-hop artist.

Kelly then responded with his own diss track, "Rap Devil".

In the song he goes after Em for his "weird" beard, being "sober and bored" and his "last four albums" that were, apparently, "as bad as your selfie."

Eminem then retaliated by hitting back on Friday with a new track, called "Killshot", where he raps: 

"But I'm 45 and I'm still outselling you 

By 29 I had three albums that had blew 

Now let's talk about somethin' I don't really do 

Go in someone's daughter's mouth stealin' food." 

The album cover also has Kelly's face on it, with a target and crossed eyes.

Kelly then took the feud to another level, by printing the album cover art on a t-shirt, and mocking Eminem on Instagram. Kelly shared a picture of himself flipping Eminem the finger at a concert, with the crowd mimicking his actions, alongside the caption: "he missed. #legshot #rapdevilstillNUMBERONE #letstalkaboutit"

Time to duck for cover, because Em ain't gonna let this one slide.