Cartier celebrates their 100th anniversary

Diamonds are a girl's Best friend: Can we say A-list? Last night Cartier celebrated their 100th Anniversary and we must say they have never looked better.

Anne Hathaway, Justin Timberlake, Jessica Biel, Eva Mendes, Demi Moore, Kate Hudson and Elton John were on hand to help blow out some of Cartier's candles.

Although Kate Hudson looked amazing in a barely there ensemble, it was her jewelry that definitely caught the eye. Kate was dripping in over $1million dollars worth of diamonds at last night's event. What recession??

Anne Hathaway stayed modest as she was rocking over $500,000 worth of Cartier jewels. 

Not to be left out, Justin Timberlake also decided to accessorize with some serious bling. He accessorized with a diamond panther tie pin and some serious diamond cufflinks.

Besides looking good, all of this excess and luxury was also for a good cause. The birthday bash was benefiting Service Nation, an organization that encourages volunteering. Happy Birthday Cartier!