Looks like the tabloids have a source deep inside Angelina Jolie's uterus. This week, her rumored incubation of Brad Pitt's second (and possibly third, if you believe those twin whispers) progeny earns a spot on five separate covers.

Us Weekly and Star proclaim, "Yes, It's True!" while OK! ("Yes, Angie's Pregnant!") and In Touch ("Angelina's Pregnant") opt for an equally straightforward approach. Only Life & Style branches out, offering the ominous, "Angelina's Dangerous Pregnancy."

Brangelina at the SAG Awards on Jan. 27

Not surprisingly, all of the tabs feature shots of Jolie in the vintage Hermes Big Top she donned for the Screen Actors Guild Awards, a gargantuan gown that supposedly couldn't hide the pouty-lipped embryo(s) that may be gestating within.

"It was so obvious she was pregnant," a spy tells Us. "You could clearly see the bump's outline."

So far, the glowing mommy of Maddox, 6, Pax, 4, Zahara, 3, and Shiloh, 20 months, has kept her piehole closed on her reproductive situation, although Us believes that could change if the price is right.

According to the magazine, Jolie is considering selling confirmation of the purported pregnancy to the media and donating the proceeds.

You'll recall a similar scenario played out when the altruism-minded Oscar winner was pregnant with Shiloh. She reportedly arranged for a staffer from the Yele Haiti charity to take a photo of her burgeoning belly and sell it to People for $400,000.

The tyke's in utero benevolence continued after her auspicious debut in May 2006, when the philanthropic flames sold off her baby pics to People for a reported -- and unprecedented -- $4 million, which was also earmarked for charity.

But the Jolie-Pitts may not be the only ones looking at a big payday courtesy of the fruit of their famous loins.

Seems the respective rug rats of Nicole Richie and Christina Aguilera have also been the subject of some high-stakes bidding.

According to Gawker, People has scored the exclusive first snaps of Nicole's little girl Harlow for a cool million. No word on whether that supposed sum will go to the children's charity the starlet set up with boyfriend Joel Madden.

Meanwhile, People and OK! have supposedly squared off for the honor of revealing Christina's son Max to the world.

Gawker says the asking price for the little nipper (dad is music exec Jordan Bratman) has reached $1.5 million, although MSNBC believes negotiations may have recently hit an impasse.

Next: Romance Report: Diaz & Speedman, Jess & Tony