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By Kat Giantis
A week after Suri Cruise celebrated her sixth birthday, a tabloid is giving the tot a very special gift: an imaginary sibling.
"Baby Bombshell," declares Star magazine, which says Katie Holmes, 33, is expecting another fruit of Tom Cruise's loins.
"She's struggling to contain the news," an insider tells the tab (via Hollywood Life). "She can't wait to be a mom again, and the sooner she can tell the world about it, the happier she'll be."
The evidence, such as it is, includes an earwitness to Suri asking her mom if she had "her baby sister" in her tummy, a question supposedly posed as they faced a paparazzi crush on their recent trip to see "Newsies" on Broadway.
"Katie laughed and whispered something in Suri's ear," relays the spy.
As for Cruise, who is also dad to Isabella, 19, and Connor, 17, with ex-wife Nicole Kidman (they adopted the kids as babies), he's said to be delighted by the news.
But alas, it appears the actor, 49, won't have a chance to break out that at-home sonogram machine he purchased during Katie's conspiracy theory-surrounded gestation of Suri.
Holmes' rep assures Wonderwall, "She is not pregnant."
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