One source claims the 18-year-old was actually bullied for being there -- apparently not everyone thought she earned the right to walk the shows!
The insider spilled:
Lovatics have been fawning over the edgy, seksi, glowing look ever since the vid was released, so DemDem's makeup artist Jill Powell has gifted us with a very special treat!
In a fun behind the scenes video, she explains how she got Demi's and her backup dancers' looks to pop, both with and without blacklight. Click play (above) to watch and learn!!
And CLICK HERE to read Jill's EXCLUSIVE with us, featuring written-out directions on how to get the Neon look!