What goes on in Vegas most certainly will NOT stay in Vegas here!
Watch it go down (below)!!!
We LOVE this!!!
Well, now we ALMOST can because DemDem has exposed all her genius secrets in this video (above)!
From her hair to her songs to how many instruments the talented singer plays during her show, we're impressed by it all!!
Ch-ch-check out all the juicy Demi secrets (above)!