Celebrated fashion designer Roberto Cavalli has 'confirmed' reports Jennifer Lopez is expecting her first child, after confessing his difficulty in dressing the ever-changing figure of the mother-to-be. Lopez has continually refused to comment on whether she is pregnant or not, despite recent pictures of her performing live with a bulging belly. But Cavalli, who is providing the clothes for the Latina and her husband Marc Anthony's current North American tour, admits Lopez's expanding stomach is causing some wardrobe problems. He tells People.com, "It is so complicated because every week she is getting bigger."