Rihanna rocks another wild outfit !

Painting on a smile: Rihanna returned to work two days after her grandmother's funeral, headlining at the Wireless Festival
Gave the audience a good look: Nicki wasn't shy to flash her pants

Despite burying her beloved grandmother two days ago,Rihanna still put on a smile as she headlined the wireless festival in Newyork..Nicki Minaj also performed