We'd bet money or even shoes on the fact that someone at the Costume Ball will arrive wearing Prada, and someone will arrive wearing Lanvin. The curious thing is, Miuccia Prada and Alber Elbaz may not arrive at all. We hear from an inside source that, as of today, neither the Prada head nor the Lanvin creative director have made plans to attend the Costume Ball, a curious notion considering both are huge Vogue advertisers and both are also pretty damn cool. Even more interesting is that Prada most definitely has a table at the ball - they've even invited Tilda Swinton, Oscar winning awesomeness, to sit there. Why are the designers avoiding the "Biggest Party of the Year"? And is there any way that we could just dress up as them and go instead? Because duh, we'd totally wear glasses and a bow tie or a giant feather hoop skirt, just for the chance to shake George Clooney's hand and brush up against an Olsen!