The Material Mom has some haters when it comes to fur.
"When you see Madonna in fur, you realize why nobody has copied her style since 1984," PETA commented on its Web site. "We know that she's on the prowl for a young cub, but someone needs to tell Madge that wearing fur doesn't make you a cougar."
As for aspiring fashion designer Kanye West, the organization had some harsh words for the colorful rapper.
"Kanye rants about not winning Album of the Year at the Grammy Awards, but what he really deserves is a 'lifetime bereavement award' for all the corpses in his closet," PETA wrote. "Kanye, we love the quirky suits, but you can't claim to be 'the voice of this generation' while flaunting fur, which is old-school and cruel.
Runners-up to the list included Ashton Kutcher and Demi Moore, Mary J. Blige and Kate Moss.
Last year, music icon Aretha Franklin was dubbed PETA's worst dressed celeb, followed by Marilyn Manson, Lindsay Lohan, Eva Longoria Parker and Kate Moss.
Related Content from AccessHollywood.com:
PLAY IT NOW: PETA's Banned 'Veggie Love' Sexy Super Bowl Ad
PLAY IT NOW: Amanda Beard Bears All For PETA