WHEN SHE FIRST burst upon the scene, with the release of The Fame in 2008, the artist formerly known as Stefani Joanne Angelina Germanotta was written off by some as a second-rate Christina Aguilera—probably because they had similar bleached-blonde hair-dos.

The comparison was short-lived.  By the time “Bad Romance” came out a year later,  detractors dismissed the pop star as nothing more than a two-bit Madonna impersonator, a charge she can’t seem to shake.  While there are some surface similarities between Lady Gaga and Madge—they’re both women; they’re both superstars; they both hold with the less-is-more school of couture; and, yes, “Born This Way” sounds like “Express Yourself” to a degree best described as actionable—the two are worlds apart.