Katrina blames Deepika Padukone for her break-up with Ranbir Kapoor ?

The claws are out. The two celluloid divas who were at different points in their lives deeply involved with Ranbir Kapoor are not even pretending to be friends any longer. The battle lines are clearly drawn, and as far as Katrina is concerned Deepika doesn't exist.

Says a prominent colleague of Katrina, "Deepika is persona non grata. She doesn't exist for Katrina. No mention is made of Deepika by Katrina. And if anyone mentions Deepika in any conversation Katrina simply blanks out."

The latest in the cold war is the standing instruction to Katrina's business management team that no question on Deepika be allowed in any of her press interviews.

So where does this animosity come from?

According to a source Katrina blames Deepika for aggravating the problems between them. "The time that Ranbir spent with Deepika promoting Tamasha was when his relationship with Katrina developed snags and problems."