Though Britney Spears will be closing up shop on her highly successful Las Vegas residency at the end of 2015 — making room for Jennifer Lopez — she proved during Sunday night’s Billboard Music Awards that she’s still got the performer’s spark left in her during a lively “Pretty Girls” duet with former Australian resident Iggy Azalea. After a charming if non-vital music video for the Invisible Men-produced song, the pair danced and mostly mimed their way through their appearance, which those in attendance at the awards claimed was pre-taped. Watch it here.