The other night as I was leaving Z100′s Jingle Ball, Britney Spears’ “Womanizer” was blaring over the loudspeakers, and I swear to God, at least 75% of the ladies streaming out Madison Square Garden’s doors were singing along with Spears’ semi-robotic “womanizerwomanizerwomawomanizer”-ing. Apparently Lily Allen isn’t immune to the song’s charms, either; she worked up a shaggy-haired cover of the track that Mark Ronson premiered on his online radio show Authentic Shit this past Friday. (Also on the playlist: His own contribution to that Maroon 5 remix album. So modest!) Meanwhile, the ’80s baby Ladyhawke put her own spin on the song on Radio 1′s Live Lounge; I personally prefer Allen’s version, if only because it seems to be a little more kiss-offy, and a little less self-serious. But you can judge for yourself with the embeds after the jump!