Article continues below advertisementTaylor Swift's latest era is facing legal scrutiny as a Las Vegas performer takes the pop superstar to court over her "showgirl" branding.The lawsuit, filed by performer and columnist Maren Wade, claims Swift's album The Life of a Showgirl infringes on her long-running brand, "Confessions of a Showgirl," raising questions about ownership, originality and the limits of common creative terms.