Lovely Kate Middleton celebrates a milestone Monday -- turning 30 -- and no doubt, she’s doing it in royal style!

RadarOnline.com is marking her big day with a look at some of her most memorable fashion moments.

The down-to-earth beauty has become a style icon traveling the world in outfits by some of her favorite designers such as Daniella Issa Halleyal and Alice Temperley.

PHOTOS: Princess Of Style Kate Middleton Turns 30

Her stunning wedding dress made Sarah Burton one of the world's best-known fashion designers.  She and another of Kate's favorites, Erdem Moralioglu were nominated for British Fashion Awards this year.

Kate Middleton proved she's red carpet royalty as she stepped out at the U.K. premiere of War Horse looking lovely in lace.

The Duchess of Cambridge showed off her super slim figure in a floor length Alice Temperley ivory and black gown and wowed the crowds at her first royal film premiere.

PHOTOS: William And Kate Dazzle At London 'War Horse' Premiere

Her husband, Prince William, accompanied Kate and looked dashing in a black tuxedo and bow tie.

The couple greeted the film's director Steven Spielberg and lead actor Jeremy Irvine, who was thrilled to have royal support.

PHOTOS: Kate Middleton Shows Off Her Perfect Posterior

"The fact that they're here to watch my fat face on a cinema screen is bizarre," he said. "It's such a thrill. And also for their charity. It's a great cause."

The event benefited the Foundation of Prince William and Prince Harry.

PHOTOS: Kate Middleton Goes Green

Kate turns 30 tomorrow but palace officials says she with celebrate with a 'low-key and private' affair.

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Alice Temperley, one of London’s hottest designers (Kate Middleton has rocked several of her designs!) has teamed up with beauty brand Elemis for a great cause. The duo are launching the 'Safari Travellers’ collection for him and her - and RadarOnline.com has all the details about the charitably chic collaboration.

Created specifically to raise money and awareness for Mothers4Children charity, the luxury travel kits feature carry-on friendly sizes of Elemis’ best-selling spa and skincare products, packed into Temperley London leather and canvas leopard print travel bag.