The rapper explained:
[Image via Karl Lagerfeld/Harper's Bazaar.]
Well, this is a big surprise and completely random!
The powerhouse vocalist surprised everyone when Ryan Seacrest introduced her to the crowd!
There was a little banter between the two, ending with Demi slyly alluding to more possible North American tour dates after she visits South America!
AH-Mazing! We totally need this!!
Ch-ch-check our Dems and her cuteness (above)!!