Well, her shapeshifting would certainly help with that; I mean, the GOOD Impersonators can easily make a few hundred bucks per gig, and that's for only a couple hours "work." So, really, if she charged $500 a pop (which is actually CHEAP; the top impersonator agencies charge about 400 - 700 pound sterling, which is roughly 600 - 1000 dollars-ish) and did one gig a week, that would be 2000 dollars a month. Not bad for a combined nine or ten hours work. :P And since she can shapeshift, she wouldn't have to rely on one look or celebrity; she could easily have four or five different "looks" that she cycled through, as well as hiring out as a lookalike singer that could actually mimic the performance. With her powers, she could - if she wanted - easily rake in a couple of thousand a week.