Obviously, Nicole Kidman isn't shying away from flashing the new ring (engagement may we call it?) on her left hand:

From The Courier Mail News: " FOR once there was no sign of Nicole Kidman's constant companion. But Keith Urban's ring was clearly visible on the actor's left hand in New York yesterday, as she presented News Corp chairman and chief executive officer Rupert Murdoch with a humanitarian award. [...] Kidman was clearly the night's star attraction. Every glimpse of the ring on her wedding finger was greeted with scores of rapid-fire camera flashes from assembled paparazzi."

From Just Jared: " Nicole Kidman left little room for speculation as she proudfully wore a ring on the ring finger of her left hand yesterday at the The Waldorf Astoria. Nicole Kidman's engagement ring? Or wedding band? Despite the ring, Nicole Kidman's publicist hasn't confirmed whether she is engaged to country singer Keith Urban, let alone address the marriage rumors surrounding the Aussie power couple. Actress Nicole Kidman was in town to present a humanitarian award to News Corp chairman and chief executive officer Rupert Murdoch. "Nicole Kidman's dinner conversation with Mr. Murdoch and his wife Wendy Deng was interrupted by bursts of flash each time she lifted her fork to her mouth and exposed the ring to the photographers' lenses."

Photo from Just Jared