Amid rumours that Jennifer Lopez has brought her post-break-up drama to the set of her latest movie, insiders have spilled that tensions are rising between the diva and her co-star, the no-nonsense Cameron Diaz. Both taking lead roles in the upcoming pregnancy romcom, What to Expect When You\'re Expecting, J-Lo and Cam are said to be at one another\'s throats, making catty comments about each other and ignoring one another at all other times. \"Jennifer and Cameron don\'t like each other,\" an insider spilled to Star. \"They don\'t interact much, but when they do, the tension is thick.\" Said to be annoyed that Jennifer\'s looming divorce drama has been the talk of the set, 38-year-old Cameron has told pals that J-Lo\'s causing a major distraction, and is also rumoured to be angry over Jennifer\'s alleged on-set romance with their co-star, Rodrigo Santoro. \"Cam sees all that stuff and hoopla around J-Lo\'s divorce from Marc Anthony and whether or not she\'s dating Rodrigo as a distraction from work,\" said the mole. \"She\'s also annoyed by Jennifer\'s huge entourage, which includes her mom, three assistants, make-up and hair people and her manager.\" Adding, \"She made a snide comment to the effect of, ‘How many people does it take for one woman to film a scene?\'\" And Jennifer, 42 - said to be smitten by 35-year-old Rodrigo - has hit back by ignoring Cam on set. \"Jennifer doesn\'t seem to care,\" says the insider. \"She doesn\'t talk about Cam or ask about her. She just acts as if Cam doesn\'t exist.\"