The rumours about a tiff between Bollywood superstar Salman Khan and his ex-girlfriend Katrina Kaif on the set of their upcoming film Ek Tha Tiger were not false as director Kabir Khan has confirmed that the actors had an argument while shooting a particular scene. Though Kabir didnt give any detail about the nature of the fight, he said that it was over a dress worn by the actress in a song sequence. Katrina and Salman go back a long way. He was very involved in their scenes together and her costumes. They have a certain equation. Even Salman seeks her opinion. But yes, there was an incident where they disagreed over Katrinas costume in the song. It was over a particular cut in the black blouse she has worn with a yellow skirt. Kabir also accepted that the Dabangg actor threw some starry tantrums on the sets of the film initially and came on his own time. I will be honest. It took time for Salman and me to come on the same page. There were teething issues on how we look at the scenes and his character. Salman reports on the sets on his own time. He does not start his day early. And he was clear about it before we went on floors. But once he is on the sets, he is all yours till you wrap up. So well, you just have to plan your day with him intelligently, Kabir added.