Even though they’d already agreed to divorce, Katy Perry reportedly was so angry when Russell Brand filed without first notifying her that she decided to taunt him — by sending a photograph of her half-eaten hamburger to his cell phone. A source explained to the British paper Daily Star: “When Russell and Katy were married he tried to convert her to veganism, but she refused to go along with it. He’d try to always cook vegan meals for them when they were both at home. He hated her eating meat, especially when he was around to witness it.” The insider continued: “So as a childish act of revenge, she had a few drinks with her friends and started texting Russell. He was ignoring her, so she did the one thing that she knew would get his attention and annoy him. She sent him a picture of a half-eaten Big Mac with the caption ‘Mmmm, tasty.’ Russell sent her a four-letter, one-word reply.” Brand and Perry were married in India in October 2010. Now that the terms of their split have been settled, with Russell waiving his right to Katy’s fortune, their divorce will be finalized in July.