Kate, 30, came first in a ranking of stunning celebrities including Kelly Brook, Cheryl Cole and her own younger sister Pippa, a poll of 1,000 Brits found.
The British royal won because of her English rose looks and glossy chestnut locks - usually blow-dried into big, bouncy curls - and well-groomed fuller eyebrows, a look copied by thousands of women.
Recently, Kate's pale grey dress by Beulah London with a draped head scarf had evoked memories of Princess Diana as she and Prince William made their first ever visit to a mosque in Malaysia.
She was followed by 'This Morning' presenter Holly, 31