Jessica Simpson is the newest celebrity target of the bleeding heart animal rights workers of People For The Ethical Treatment of Animals, thanks to pop star’s performance at SeaWorld in San Diego on Saturday afternoon.

On Friday, PETA special projects manager Michelle Cho served J.S. with a stern letter asking the crooner to consider pulling the concert in protest about the dolphins kept in captivity at the popular tourist attraction.

“As someone who is used to living in a fishbowl and having the public weigh in on her every move, you might like to give some thought to the animals who are forced to be ‘on display’ their entire lives,” Cho wrote in the letter obtained by WENN.

“Imagine being forced to do stupid tricks and swim endless circles in a bathtub. Life for whales, dolphins, polar bears, and fish who live in tanks and cages is like a bad reality show that plays 24/7. There are no commercial breaks, and the show is never cancelled,” she continued.

“In 2004, the stress of performing at SeaWorld proved to be too much for one orca (whale) named Ky. After becoming agitated during a show, Ky attacked and repeatedly slammed his trainer underwater as a packed crowd looked on in horror.”

In conclusion, Cho added, “SeaWorld, which owns most of the captive orcas and dolphins in the U.S., has one of the worst animal-care records in the country. Countless animals have lived and died in misery in these marine theme park. We’re asking you to support the dolphins. Please reconsider your decision to perform at SeaWorld and promise not to appear at venues that exploit animals in the future.”