Avril Lavigne "pushed" her boundaries for her new album.

The 28-year-old singer is set to release her follow up from 2011's Goodbye Lullaby and has thoroughly explored her emotions for the record, insisting she is proud for having a "completely different getup" to other female artists since first appearing on the music scene in 2002 with her track "Complicated."

"Lyrically, I pushed myself to talk about different subjects I haven't talked about before. I didn't want to be so simple. I tried to really express myself and go deeper. I wasn't the girl baring her midriff with backup dancers and a headset microphone. I came out and had a lot to say with my lyrics, and I played the guitar. I had a completely different getup, stage presence, everything," she said.

The "He Wasn't" musician recently revealed she has teamed up with goth rocker Marilyn Manson for a track on her upcoming fifth LP and admitted the '"heavier" material came about very spontaneously: "It was last minute [the song came about]. I was sitting there at the board thinking Manson would be perfect on this track, so I texted him and he's like, 'I'll come over and hear it.' So he came at four o'clock in the morning... Yes, it was one of those nights."