In their October 22 ad in Variety, the Center for Science in the Public Interest (CSPI) and six other organizations slammed Katy for allegedly convincing kids to sip soda through her promotions.
"Virginia Slims and other tobacco companies used glamorous celebrities and models to position smoking as hip, sexy and rebellious," the open letter reads. "Today soda companies are using you and other celebrities to convince young people that drinking soda is hip, sexy and rebellious. 'Drink Pepsi and you can be cool like Katy Perry,' is the takeaway message for your young fans. 'Live for now' and worry about the health consequences later."
However, Katy doesn't even have an official endorsement deal with Pepsi. The somewhat vague link concerns Pepsi's request to fans at the Video Music Awards to vote on which song Katy performed. So why attack Katy?
"It's a sad story that some of the best-known celebrities in the country are encouraging their young audiences to drink beverages that are bad for their health," explained Michael Jacobson, executive director of CSPI. "We're focusing on Katy because she's so popular with young people."
As for Pepsi, the company issued this statement: "We have a long history of responsible advertising and marketing practices, including a commitment to not direct our advertising to audiences comprised predominantly of children under 12."
Katy might want to take a tip from Beyonce, who had to deal with her own fizz fuss when she earned a reported $50 million for endorsing the soda.
"Pepsi is a brand I've grown up seeing my heroes collaborate with. The company respects musicians and artistry. I wouldn't encourage any person, especially a child, to live life without balance," said Beyonce.
However, CSPI isn't the only one trying to get people to stop drinking soda. First Lady Michelle Obama is waging a campaign to get everyone to drink more water: Read all about it by clicking here.