Album: Christina Aguilera, Bionic (RCA)

As Aggy returns to the diva fray, naysayers are suggesting that a certain other Warhol-loving exhibitionist has rendered her passé.

That’s gaga, frankly. With typical restraint, Bionic corrals collaborators from Le Tigre to Linda Perry into an 18-track opus featuring chunky urban electro, gusty power balladry, lilting jazz-pop and bubblegum dance-punk. It’s overlong, narcissistic, often lyrically risible, and yet – potential hit for potential hit and commanding vocal for commanding vocal – nigh on irresistible.