Girl crush! I absolutely love and adore Natalie Portman. Mind you, not only because she is out-of-this-world beautiful, but also because she's got a good head on her shoulders, she's a smarty pants(she studied Psychology at Harvard), and she also a philanthropist who supports an innumerable amount of charities and causes. Recently Natalie appeared on David Letterman sporting this lovely yellow Valentino dress. Modcloth's "Look on the Sunny Side Dress" is really similar with a more affordable price tag, $87.99.