The ever-sexy Fergie returned to the stage for the first time since announcing her split from her husband, Josh Duhamel, at the Rock in Rio music festival in Rio de Janeiro, Brazil.

Eleven years after the release of her debut solo album, The Dutchess, the sultry star is set to release her new album, Double Dutchess, on September 22.

Click through for more pics of Fergie showing off her fit physique.