Lily Allen has hit back at music industry double standards in her comeback song, "Hard Out Here."

The 28-year-old pop star has re-emerged after a four-year hiatus from music and taken aim at the way female singers are treated compared to their male counterparts in the lyrics and music video for her new single.

The video (seen after the jump) sees Lily - who has had two children, 23-month-old Ethel and 10-month-old Marnie in recent years - undergo liposuction at the behest of her manager in order to look thin and glamorous after her break from music. Elsewhere in the clip, the singer mocks raunchy music videos as a troupe of scantily clad dancers writhe around behind her, pour champagne over their breasts and shake their posteriors.

Lily also appears to poke fun at singer Miley Cyrus as she attempts to twerk. The song's lyrics, meanwhile, see the sharp-tongued songstress point out the sexist double standards in the music industry: "If I talk about my sex life, you'll call me a s**t / When boys be talking about their bitches, no one's making a fuss." Later in the chorus, she blasts, "Forget your balls and grow a pair of t*ts / It's hard, it's hard out here for a bitch."

"Hard Out Here" serves as the first single from Lily's upcoming third studio album, following 2009's It's Not Me, It's You.