Maybe it's because I thought Isla Fisher was hot and they kinda look alike. In fact I think I've read somewhere that they get mistaken for each other all the time. Complimentary all in all as they are both hot.
Don't worry readers...I'm still straight as a pin (though something tells me my life would be a whole lot better if I were not) . But there's no reason why I can't admire hottness when there's hottness to be found!