Elly Jackson is the perfect London pop star of the moment: a 21-year-old loudmouth bossypants with appallingly awesome hair and a vacant stare of a voice. Along with co-writer and fellow synth dude Ben Langmaid, she's ruling U.K. radio with splashy dance hits about sex and betrayal. The definitive gem on the duo's debut album is "Bulletproof," where she vows, "I'm not turned on to love until it's cheap" — and in La Roux songs, love is always cheap, not to mention tainted. Jackson and Langmaid are not coy about their 1980s New Wave inspiration — "Bulletproof" sounds exactly like Yaz, right down to the way Jackson sneers the words "put me down." But that just gives them an extra jolt of glam arrogance.