It could well be a trick of the light, combined with an unflattering outfit choice.
But the usually immaculate Katy Perry was looking a little curvier than usual during a concert in Budapest, Hungary, last night.
The 25-year-old star took to the stage in a skin-tight silver rubber dress, which clung in all the wrong place.
With the material buckling around the waist, the figure-hugging design even gave the impression of a protruding belly.
Usually Katy looks a million dollars, but apparently even she has her off days.
Girth. Protruding belly. Off day.
Here's the picture the Mail uses as 'evidence':
'Girth' indeed. Another side-on pic shows absolutely no evidence of a 'protruding belly' (not that it would matter if it did).
Thankfully, the overwhelming majority of the people leaving comments are scathing of the Mail's irresponsible line:
(Angry Mob has posted on a similar Mail article, about Pierce Brosnan's 'burgeoning belly'.)
UPDATE: Twelve hours after publication, and following well over 200 extremely critical comments, the words 'protruding belly' have been removed from the article. It was this:
But is now this:
* On a similar theme, it's well worth reading Anton Vowl's post from last week called The Mail, Laura Robson and Cher Lloyd.