The British boy band are to headline the Party In The Park festival in Temple Newsam, Leeds, Northern England on July 22 and organisers are so worried about them being overwhelmed by their devotees, they are going to unusual lengths to keep the quintet safe.
A source told the Daily Star newspaper: "No stone is being left unturned.
"We are considering every viable option to avoid the lads getting absolutely overwhelmed by their fanatical fans.
"They want each member of One Direction to arrive separately in animal-themed disguises."
In addition, the group - Harry Styles, Liam Payne, Zayn Malik, Niall Horan and Louis Tomlinson - will leave their luxury touring vehicles at home in another attempt to have their presence undetected.
The source added: "They also want them in a normal car to prevent them getting mobbed. Instead of arriving in the all-singing, all-dancing tour bus or limousine, they will be bundled into an everyday vehicle while wearing costumes to fool people."
Meanwhile, Harry spent last week house-hunting in Primrose Hill after being advised by pals that the north west London district is a fun place to live.
A source said: "Harry is house-hunting in a trendy part of town because a lot of his friends have told him that's where he should be looking to live.
"Presenter Nick Grimshaw said that's the best place to be, so Harry's looking into it."