We've all heard that Lady Gaga might perform at tomorrow's Mugler show, where her stylist Nicola Formichetti is creative director. But a reliable industry source tells us that she'll definitely be walking the runway. "Unless she throws a diva fit, she's walking," says the source.
Update: Gaga confirms it, via Twitter.
Watch the show on Facebook at 3pm EST, 9pm Paris time. (We'll also be tweeting from the audience.)