Can you tell me how?

Am I the only soul who think Katherine McPhee and Sarah Wayne Callies look a hell load alike????
HOW IS THIS POSSIBLE!!!
ok i'm being melodramatic but it does make me believe the whole 7-ppl-in-the-world-look-alike theory.

No seriously, they look so alike!!(its KM on the top and SWC below if you're wondering)

Oh Oh Oh!
Happy birthday to Anand today. Wee, 21 eh!
Happy birthday baby love:) *when its midnight*

-How by Katherine McPhee- (yes the title is awfully ironic)