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Katy Perry's been not-so-subtly hinting at a pregnancy on Twitter ever since she got engaged, but now the newly betrothed couple is fueling the fire by shopping at a baby boutique in London!

Katy and Russell were spotted admiring the tiny shoes at Cubs, a kids' store near Russell's home. Afterward, they went for lunch, where a source tells The Sun, Katy ordered scrambled eggs and asked for the eggs to be 'well done'. And when Russell asked for a portion of chips she loudly announced to the waiter, 'Hold the mayo.'" (Doctors advise expectant mothers to stay away from uncooked eggs!)

Perry's also been spotted with the tell-tale hand on her belly recently. But then again, Nicole Kidman has been spotted doing the bump stroke of late, and her rep vehemently denies there's a little Urban inside her womb!