Megan Fox hit the big 4-0 this year ... and she sure makes one bangin' birthday girl! The actress is still hot as ever, and there's really only one way to properly celebrate such a major milestone. That's right ... it's time for some birthday hot shots! From nearly-nude red carpet fits to lusty lace-up looks, Megan loves putting her flawless figure on display. So, hit her with a "Happy Bday" by checking out our gallery of her steamiest snaps! Spencer Pratt and Chelsea Handler are in a war of