Despite looking like best buds in the video for the single, Iggy seemed to blame her co-star for the song bombing in the charts, after she responded to a fan’s question on Twitter.

When asked about why the single ‘flopped a little bit,’ the Australian rapper wrote: ‘its difficult to send a song up the charts without addition promo and tv performances etc. unfortunately I’m just featured.’

And after she was attacked by Britney fans for throwing shade at their Queen, Iggy responded curtly: ‘my comment is factual, it applies to any song. I don’t have to suck the womans a**hole 24/7 to be her friend, do i? bye girls.’

Britney, never one to engage directly with showbiz spats, seemed to hit back however, with a veiled reference to Iggy’s cancelled tour (sources claim this was due to low ticket sales.)

‘Can’t wait to get back to Vegas. So thankful I have shows for the rest of the year to look forward to…#YouWantAPieceOfMe’ Britney tweeted.

What a comeback. It’s Britney B****.