It's National No Bra Day, apparently. It is unclear (at least to us), who launched this event, or why. Is it related to that "I Heart Boobies" breast cancer awareness stuff? Did some boob-loving dudes think it up? Here's what we know: More than 250,000 people have indicated on the National No Bra Day Facebook page that they are "going" to the event, whatever that means. And Twitter reaction has been supportive. "National No Bra Day!!! God Bless America!!!" tweeted one guy. Another Tweep noted it's no day to let your spirits sag, writing, "Enjoy Monday for once :)" Not everyone's a booster, though. Speaking for underwire fans everywhere, one woman wrote: "I think I'll pass, ouch."