Rowing on the Thames last April, Wills goes with the flow. "He's dressed appropriately for any activity," says May.These tweedy duds earn an A on Wills's first day at Eton last fall. "If my little boy would dress like this, I'd be very happy," says Deborah Norville.The bright parka gives his skiing a big lift on the slopes of Klosters in Switzerland last January. "Nice," says Derek Bell in a simple summing-up.After classes at Eton in April, Prince Charming has discarded half his uniform. Complains Idalis DeLeon: "It's a crime for a kidto look this goodat this age."With Britain's pubescent girls falling asleep beneath pinups of their dreamy king-to-be, it's lucky Prince William, 14, inherited Diana's flawless taste as well as her face. "He already looks like a model. He makes no mistakes," says Clueless costumer Mona May of the classically collegiate clothes Wills favors. Londoner Penny Rose predicts that the man who will rule Britannia will also govern his wardrobe closely. The Eton experience, she explains, sets him up for a certain "standard of dressing the rest of your life--you wear cuff links and shine your shoes every day." But one judge finds such princely perfection a royal pain. Says a hopeful Jonathan Katz: "He's young, and he can still learn how to dress badly."