Cutting short her planned family holiday in London with her mom and sisters, Katrina flew back to Mumbai on Tuesday to practice for some additional action sequences in Dhoom 3. Yes, Katrina Kaif’s stunts in Dhoom 3 just got more ominous and dangerous. We hear the Yash Raj team watched her super-smooth kicks and flips with Salman Khan in Ek Tha Tiger, and decided to give a substantial fillip to Katrina’s action quotient in Dhoom 3. We now hear in Dhoom 3 she will perform the most dangerous stunts ever by a leading lady in Yash Raj film. Says a source close to the project, “If you look at the other Dhoom films the ladies Esha Deol, Bipasha Basu and Aishwarya Rai had no real stunts to perform. In Dhoom 3 Katrina was given at least 3 major action sequences for which she was to be specially trained. Now after Tiger Yash Raj is adding a couple of more action sequences which would be managed by a fleet of action co-coordinators.” Interestingly Aamir Khan who plays Katrina’s soul-mate in Dhoom 3 doesn’t have that many action sequences. “He plays a cool cerebral villain, more into the intellect than fists. Yes, he does have some major stunts. But Katrina plays the more fist-friendly character. And Dhoom 3 would be her first full-fledged action role. Though she plays an aggressive character in Ek Tha tiger she wasn’t allowed to do any really daring stunt scenes,” says our source. Apparently, Salman watched over Katrina’s derring-do quotient in Ek Tha Tiger and told her to “take it easy”, even “whispered” to the international directors to “make it easy” Says our source, “Katrina always wanted to do a full-on high-voltage action film with no body doubles. In Tiger she could only get halfway there. In Dhoom 3 she has just been provided with even more scope for the hi-jinks.” We hear the stunts for Katrina in Dhoom 3 would be on a par with Uma Thurman’s power-packed flips and somersaults in Quentin Tarantino’s Kill Bill. The actress has been on a no-fat diet in London to get into the required shape. She flies back this week ready to kick some serious a*%.