Katy Perry shared her baby news with her American Idol costars Lionel Richie and Luke Bryan and joked that she’s “definitely going to get fat” as her pregnancy progresses.“Guys, I can’t tell you how excited I am that we’re going to have a fourth judge on the show this year,” the “Hello” singer, 70, said in a clip Bryan shared to Twitter on Sunday, March 8.“I think it’s the perfect addition to this panel,” the country crooner, 43, added.“Well, should we tell them who it is?” Richie asked.“I think it should come from Katy,” Bryan replied.“We’re having a baby!” the “Firework” singer, 35, exclaimed as she rubbed her hands over her baby bump and her fellow judges embraced her. “Oh, my god, I’m terrified.”The Grammy nominee, who announced earlier
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