Ranbir-Imran clashes ...

This time the two stars will fight it out at the box office Their incredible chemistry, as hosts on an awards night and in a chat shosometime back, was the talk of T'town. And with it, Imran Khan and Ranbir Kapoor seemed to show that competitors can be friends. But Bollywood is a tough place to survive in and it doesn’t take too long for friends to turn foes. Is that what's happening with Ranbir and Imran?After endless comparisons and a certain Miss Kaif,

the rumours about a problem between the two began doing the rounds And the two seemed to keep their distance from one another. But now they might get competing again. It seems like the duo might be fightong it out at the box office. Imran’s ‘Mere Brother Ki Dulhan’ and Ranbir Kapoor’s ‘Rockstar’ are scheduled to release on the same date (September 9). Incidentally, ‘Mere Brother Ki Dulhan’ will see Ranbir’s alleged ex Katrina Kaif opposite Imran.So who's going to win this round - Imran or Ranbir? Watch this space for updates