Make-up artist Subhash initially refused to perform the patchwork for the Tees Maar Khan actress as he had already made arrangements to travel to London to work with Sharma.
A source told Mumbai Mirror: "Katrina on Sunday refused to let Subhash go for the assignment since she had some urgent patchwork shoot to finish on Monday.
"Subhash informed Katrina and her manager Sandhya that he wouldn't be able to cancel his trip to London since he had already got the visa and the tickets in place.
"But Katrina just wouldn't let go of him. In fact, she called in the higher authorities."
Sharma and Kaif both work for Yash Raj Films, and both are currently shooting Mere Brother Ki Dulhann opposite Shah Rukh Khan.
"When [director] Aditya Chopra learnt about it, he called up Anushka and asked her not to take the make-up artist Subhash along with her," the source claimed.
"Anushka Sharma has been a YRF discovery. And Katrina is the hot favourite in the camp right now."
They added that Sharma will also be taking the lead role in Yash Chopra's next film starring Khan.
The 23-year old actress made her acting debut in Yash Raj Films' Rab Ne Bana Di Jodi.
