Everyone's favourite pop rebel Miley Cyrus made a welcome surprise appearance at SXSW 2015 during Mike WiLL Made It's much-anticipated headline set at the Fader Fort on Thursday (March 19th 2015) alongside the likes of Riff Raff and Future.

Miley Cyrus at 2014 VMAs
Miley Cyrus brought sass to SXSW

Despite recent rumours regarding her personal life, Miley proved to be on top form in her professional life as she brought the house down during her unexpected performance alongside Mike Will Made It - who was scheduled to be mysteriously headlining with 'Friends'.

More: Miley Cyrus' boyfriend Patrick Schwarzenegger denies cheating rumours

The 'Wrecking Ball' hitmaker, who was dressed in a sparkling slip dress and denim jacket, both bearing a camouflage pattern, performed a fun rendition of her party anthem 'We Can't Stop' which Mike Will incidentally co-produced alongside P-Nasty from his own production team EarDrummers Entertainment.

Miley completed her 'Bangerz' tour in October 2014, so it was nice for her fans to see her back on the stage. It wasn't entirely unforeseen either, with the singer having previously collaborated with Mike Will on his 2013 Platinum single '23', with Wiz Khalifa and Juicy J. The track is expected to appear on his forthcoming debut album 'Est. in 1989 Pt. 3 (The Album)'.

More: Watch the video for '23'

As well as Riff Raff and Future taking to the stage, Miley got a chance to perform with rap duo of the moment Rae Sremmurd, who are also artists from EarDrummers and whose recently released debut album 'SremmLife' has topped the US Rap and R&B charts. 

Further surprises of the day came with Ghostface Killah's evening set with current collaborators BADBADNOTGOOD, when Raekwon took to the mic.