The recent LA launch of Cartier Love Charity bracelets gave some famous faces a chance to show off diamond necklaces and other jewellery.
Each bracelet in the range is a different colour, with shades indicating different types of charity.
The blue bracelet represents the welfare of children, while green signifies the environment, red indicates research and pink means the uplifting of the underprivileged.
At the launch, former Lizzie McGuire star Hilary Duff wore diamond stud earrings and a vintage Cartier diamond necklace, circa 1953.
Also in attendance was Janet Jackson, who sported a sapphire, white gold and diamond necklace by Cartier, as well as a white gold and diamond pave ring.
Cartier was founded in 1847 in Paris and is acknowledged as one of the world's most prestigious jewellery brands.
The company recently launched a MySpace campaign for its Love by Cartier range, incorporating new music from artists such as Lou Reed of the Velvet Underground.