Jennifer Lopez seemed to have an inkling of what the stork had in store for her when she joked to Ellen DeGeneres in January, "I'll take two [babies] at once, that would be great. Then you're done, and you've got two."

Now, with Lopez's belly bulging faster than Britney's case file at the Department of Children's Services, and with twin speculation running rampant, rumblings are growing louder that she and husband Marc Anthony are awaiting the arrival of a boy and a girl.

Marc Anthony and Jennifer Lopez at the Movies Rock concert in Hollywood, Calif., on Dec. 2

According to the New York Daily News, the enceinte star, 38, recently shelled out for pink and blue onesies embroidered with "princess" and "prince," respectively.

People also uncovered a telling twin-related purchase, reporting J.Lo's sister Lynda presented her with pink and blue novelty onesies classily emblazoned with the line, "Don't ya wish your mommy was hot like mine?"

Meanwhile, the Daily News says Jen and Marc's tony "top secret" registry at go-to Los Angeles baby boutique Petit Tresor includes plenty of gender and twofer clues.

Among the evidence of double buns in the oven: They've purportedly asked for a $349 striped cashmere outfit in both pink and blue, along with two Moses baskets for $225 apiece, a dual jogging stroller for $560 and two double Peg Perego strollers -- one in brown, the other green -- for $429 each.

Yes, the progeny of the finer things-preferring pair will be plenty pampered, and not just in a diaper-and-baby-wipe kind of way.

The Anthonys are rumored to have requested an oh-so-practical $289 suede play mat ('cause nothing says infant-friendly quite like leather) and the stroller version of a Bentley, namely, a $3,495 Silver Cross Balmoral Pram, which is billed as the one "trusted by the British Royal family for generations."

A J.Lo pal tells the paper she's also tapped Petit Tresor to set up three nurseries at their estates in Los Angeles, Miami and Long Island, to the tune of $40,000 a pop (before you balk, keep in mind that price includes gilded cribs).

Per the glowing mommy-to-be's specifications, the rooms will be outfitted with only the swankiest items for the tot(s) to poop, pee and spit up on.

"She wants them filled with the most chic furniture from Europe and embroidered linens from France," an insider tells the News, which adds the color preferences are -- surprise -- pink and blue.

Petit Tresor remains mum on the luxury loot report.

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