Paris Hilton is showing off a sizeable bump - sparking rumours she is pregnant.

The super slim hotel heiress - who last week got engaged to Greek billionaire Paris Latsis - was spotted looking unusually curvy while she shopped in swanky Beverly Hills, according to fellow shoppers.The sexy blonde is also said to be turning down party invitations and has been seen ordering fruit juice.The 'Simple Life' star, who has made no secret of her desire for children, celebrated her forthcoming nuptials to her millionaire lover of eight months, with a barbeque for friends.Meanwhile, the shipping heir has reportedly bought 24-year-old Paris two engagement rings because she couldn't choose which rock she liked best.A source said Paris is taking turns wearing the bands, both worth millions of dollars each, because "she just can't decide".

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