From PEOPLE Magazine Click to enlarge
The crowd outside London's Royal Albert Hall on the evening of May 11 strained to catch a glimpse of Prince William-or, let's get real, his fashion-savvy wife. Stepping out of a shiny navy blue Jaguar, the Duchess of Cambridge stunned onlookers in an emerald Jenny Packham gown with a neckline cut down to there, peekaboo lace back and 4-inch Jimmy Choos. They were the same Kate had worn when she'd stopped traffic just three days earlier, arriving with Will for a dinner in a Roland Mouret dress with a thigh-high slit that exposed her bare, perfectly toned leg. "Everyone gasped," says royal photographer Mark Stewart. "There was an audible 'Wow.'"

Wow, indeed. What exactly is going on with the famously decorous princess, who all of a sudden is leaving her panty hose and sensible high street looks at home in favor of more seductive styles? It all seems to point to a newly assertive Kate who, at 30, is happily married to her prince and, with a year of experience under her tiny, Swarovksi-crystal-encrusted belt, is a widely acclaimed success in her royal role. "Kate feels confident in her style," says Ingrid Seward, editor-in-chief of Majesty magazine. "You don't wear clothes like that if you are a shrinking violet." In fact, fashion experts say, Kate's already making the sort of bold choices that it took Princess Diana years to feel comfortable attempting (see box).

But don't expect her to go too far. While her trim physique, which she keeps in shape with a rigorous exercise schedule that includes running and gym workouts, is perfect for the most skin-baring styles, Lisa Armstrong, fashion editor of The Daily Telegraph, says Kate has actually made it cool for young women to dress conservatively. "It really wouldn't do for her to dress like a Kardashian," Armstrong says. "She's dressing for her role in the way that she likes. People feel she is real, and she's wearing clothes that they can wear. But she still has to look like a princess."

  • Contributors:
  • Simon Perry/London,
  • Monique Jessen/London.