Hey Michelle Williams this seems like a no-brainer but maybe don't wear black underthings if there's a chance they'll peak out of your white dress. Especially if said white dress has a giant thigh-high slit.
Wait, what's that? The Oz the Great and Powerful star intended to flash her black skivvies through the gaping gap in her flower, embellished Prada gown? The underwear is supposed to match those black Prada T-bar sandals and her Kate Young for Target clutch?
Well then Michelle, we have officially underestimated your sexy side. Our apologies. Carry on.