Vegan actress Alicia Silverstone has urged her fans to write to their local politicians in a bid to stamp out laboratory experiments on chimpanzees.
The Clueless star is supporting The Great Ape Protection and Cost Savings Act, and is rallying the support of her online followers to back the proposed legislation, which will prohibit invasive research on primates.
In a post on her blog, she writes, "The issue of experimentation on chimps is one that breaks my heart. They are so close to us. And even if they weren't, they are amazing beings.
"One way in which they are not similar to humans, however, is disease expression. Evidence has shown that when medications are tested on chimps, the results are not repeated in human subjects. So why are laboratories still performing cruel tests on these sensitive, emotional beings? Evidence is mounting that chimps just don't react to medications the same way humans do.
"Support The Great Ape Protection and Cost Savings Act by writing to your representatives. Let's all promise to write a letter this month. Strength in numbers! Consider this kind act your holiday gift to all the great apes in captivity."