"Jenny from the block"? Yeah right. The infamous diva says she's surprised by all the attention eight-time gold medal winner Michael Phelps is receiving, compared to the paltry publicity generated by her triathlon announcement. Following a TV interview, Lopez said she couldn't understand "why everyone is talking about that swimmer."

So in case you didn't know, J.Lo is training for a triathlon. Well done, Jenny. In honour of J. Lo's excessive behaviour, we're taking a look at our favourite celebrity divas and their outlandish demands...

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