I've never understood the lengths celebrities would go to hide their pregnancies. Of course, some journalists cry "pregnant" at every hint of a bump, but if it's true anyway, why deny it, only to show up a couple of months later with an even bigger bump?
Pete Wentz, fiance of Ashlee Simpson, explains:

"Every woman, no matter who they are or what they do for a living, has the right to wait until at least (three) months before sharing this very personal news," Wentz, who turns 29 Thursday, told MTV.com last week. "We wanted to wait until after the first trimester and get a clean bill of health from our doctors before confirming anything, just like any other couple."

"Being a boy I have no idea how to respond to such things and my first instinct was to protect her and the baby," said Wentz, Bassist for rock band Fall Out Boy. "It's insane that you can't let happy news brew in Hollywood. This wasn't about press or anything. ... I apologize to anyone who felt misinformed but the truth is, the person and growing baby is who I felt most loyal to protect and defend."

Now, I can understand.