Forget Queen Elizabeth II's Diamond Jubilee celebration.
The British royal family has an even bigger reason to start popping the champagne this month ... at least according to the venerable In Touch Weekly.
The celebrity gossip magazine "exclusively" reveals a photo of Kate Middleton in a rare, unguarded moment - with what looks like a cute baby bump!
Is Prince William's beautiful bride pregnant at last?
“We thought at first it might be just the way her dress fell as she walked,” says a witness who saw Kate hurrying into a local jeweler in London May 31.
“But if you looked closely," the Middleton sleuth continues, "it was a definite baby bump. It was prominent enough to cast a shadow below.”
That thing cast a shadow? Really?
Kate’s appearance may hold even more clues, says the witness: “She certainly has a glow in her cheeks ... her face is more rounded - and so is her bottom.”
Like many pregnant women concerned with chemicals in hair dye, Kate Middleton is also letting her gray roots show - a major departure for the style icon.
All of this is true, though it's equally possible that the notoriously thin Kate has merely put on a few pounds and hasn't been to the hair salon in awhile.
The Palace has remained silent on the subject, but Prince William did tell Katie Couric recently that he is “very keen to have a family,” and soon.
Aww. Congratulations, you two ... maybe.
UPDATE, 2/3/13: Now that Kate actually is pregnant, for real, the bump watch is underway in earnest! Check out the first Kate Middleton baby bump pic!