It’s a boy! Christina Ahguilera has been shopping for gender-specific gifts. “They’re all boy-themed, all blue.”These are the words said by one of her best friend. Christina didn't confirmed her pregnancy to the public , but the Sunday before last, Paris Hilton called Christina “the most beautiful pregnant woman in the world” at a pre-VMA party hosted by the mom-to-be. Emmys Awards exec. producer Ken Ehrlic did let it slip: “We’re sensitive to the pregnancy.”