50 Cent traveled down under this week, heading to Perth, Australia for the WinterBeatz Festival. Headliner that he was, the G-Unit frontman commanded the stage, along with the likes of Fabolous, Mario and Lil' Kim. The latter even joined Fif during his set, for a performance of their 2003 collaboration 'Magic Stick,' Wednesday (Aug. 17).

As the rapper-turned-actor moved through his verse on the track, which was featured on the Queen Bee's third studio album, 'La Bella Mafia,' the Brooklyn rhymer came from stage right to booming applause from the crowd.

Decked out in a tight black get-up, Kimmy Blanco spit her raps, got close to Fif's nether regions and shook her derriere. As 50 Cent finished out the song, with Kim hugged up by his side, the grinning rap star, who recently released a new song titled 'I'm On It,' made sexual gestures with the mic.

Watch 50 Cent & Lil' Kim Perform 'Magic Stick'