From the videos I've watched and a cursory google search for "Life of a Showgirl plagiarism", it sounds like she's been "interpolating" a lot of other artists for this album and it sounds like the only permission she asked for was "Father Figure" by George Michael. I can understand wanting permission given he was such a big name and his estate would be more likely to pursue legal action, but she's also accused of ripping off the Jonas Brothers. Not exactly titans of the industry, but still well known.
This album is so bind-mogglingly confusing that I misspelled mind-bogglingly while trying to express my confusion.