Victoria's Secret Model -- Sake Bombed?

We found the one person who probably doesn't dread the lights coming on in the bar come closing time -- Victoria's Secret model Alessandra Ambrosio -- but her late night exit ignited a giant controversy ... well, at least here in the TMZ newsroom.


When the photog asked her what she had to drink -- the blazing hottie either responded "sake and water" ... or "sparkling water." We can't tell -- and it's driving us crazy!!!

So what is it?!