“If [Confessions of a Shopaholic] is a hit, it was Isla Fisher in the movie. And if it doesn't work out, it was Amy Adams.” –Shopaholic star Isla Fisher, joking to Allure Magazine

But seriously, it didn't occur to me that these two might be mistaken for each other, until I saw them in back to back green strapless Oscar dresses with wavy locks:

Just to get it straight:
Isla Fisher (left in both pictures): The nympho from Wedding Crashers; love interest in Definitely, Maybe; also known as Sacha Baron Cohen's fiancee and baby mama. And she's Australian.

Amy Adams: Oscar nominated for Doubt and Junebug; princess Giselle in Enchanted; love interest in Talladega Nights and Catch Me If You Can. She's American.

And now you know. Any other actors you constantly get confused?

Tags: adams, amy adams, celebrities, celebrity twins, fisher, isla fisher