The mother-daughter duo made an appearance at Elyse Walker's The Pink Party, and rocked the red carpet in glamorous outfits.
Kate looked radiant in a bright red Donna Karen wrap-around dress, and showed off her incredible figure with a plunging neckline and thigh-high split. The Total Recall actress swept her luscious locks into a high ponytail and completed her look with black and gold strappy heels, and a black clutch.
CLICK ON PHOTO FOR MORE PICS OF CELEBRITIES AT THE PARTY
Her daughter Lily has clearly taken style tips from her fashion-forward mother, and looked just as stunning in a gold sequined mini dress with matching gold heels.
The 14-year-old— who resembles her actor father Michael Sheen in looks — seemed to be enjoying the company of her mother and stepfather Len Wiseman, as she beamed away on the red carpet and happily posed for photos.
The lavish fundraising evening, which was hosted by Hollywood star Anne Hathaway, saw many famous faces in attendance, who all grouped together in support of raising awareness of breast cancer.
Anne looked pretty in pink, donning a chic J Mendel mini dress that fell mid-thigh and showed off her toned legs. The Les Miserables actress, who chopped off her brunette locks for the role of Fantine, has kept her hair short since the release of the film and rocked her pixie look at Saturday night's affair.
The 30-year-old star has previously spoken about the challenge of changing her look for the role.
"I put it up there with the most difficult things I've ever had to do, which I wasn't expecting," said Anne at the time. "I didn't think I was that vain."
Other celebrities who attended the Santa Monica event included actress Paz Vega, model Poppy Delevingne and pregnant stylist Rachel Zoe, who was accompanied by her husband Rodger Berman.