By Mikael Wood
Updated July 10, 2011 at 04:00 AM EDT

Has the future Mrs. Bieber been taking guidance from her prince-of-pop boyfriend? On her first two albums, this Disney star never shook the moonlighting-actor vibe; on When the Sun Goes Down, though, she sounds fully invested in tart electro-disco ditties like ”Bang Bang Bang,” which strongly recalls La Roux’s ”Bulletproof.” And the top-shelf collaborators don’t hurt — see: the grinding ”Whiplash,” co-penned by one Britney Spears. B+

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