Mariah Carey's ego is smaller than her dog's

London (ANI): Time and again she has been branded as the world's biggest diva, but Mariah Carey has refuted such comments insisting that her dog has a bigger ego than her. The 38-year-old star said that her pooch thinks that he's a star. "Ha ha, my dog Jack has a bigger ego than me! We forgot his papers and so had to take him off the private plane," the Mirror quoted her, as saying.

"He growled at the flight attendant as he was carried off. He's really started to think he's the star now," she added. Meanwhile, rumours are abuzz that the pop superstar is dating actor and rapper Nick Cannon. According to reports, the pair hooked up after Cannon was hired to appear in Carey's new music video, E=MC2.