Rihanna Hits Red Carpet Premiere in Pajamas!

Actress/singer Rihanna attends the 'Battleship' World premier at Yoyogi National Gymnasium on April 3, 2012 in Tokyo, Japan. Credit: Jun Sato/WireImage.com

After stepping out in a series of sexy, skin-revealing looks, including a plunging blazer worn as a dress, Rihanna opted for a way more relaxed outfit on Tuesday.

The "Princess of China' singer hit the Tokyo premiere of Battleship in a pajama-inspired blue and gold Emilio Pucci ensemble. She accessorized with large gold hoop earrings, a long necklace and tan sandals.

In addition to trying out a new style, Rihanna, 24, is showing off a fresh jet black hair color and partially shaved 'do.

She debuted her latest hair transformation at a press conference Monday, where she rocked another loose, laid-back get-up: a black embellished turtleneck with harem pants and leather clothes by Givenchy.