There are two types of situations in which we get upskirt photos -- the ones where a woman does it deliberately (a good example is upskirt photos of Britney Spears) and ones that happen by mistake.  Katherine McPhee happened to be in the second situation.  The strong wind blew her skirt up and the world looked at her pink boy shorts.  What surprised me was that under her dress she was wearing a bodysuit (the garment that makes you have a flat tummy) was not properly hooked at the bottom.  You can see the flaps open.  Kinda clumsy, don't you think?