Goodbye Lullaby was released..

Avril Lavigne

Her fourth studio album, Goodbye Lullaby, was released on March 8, 2011.

Avril Lavigne and Kim Kardashian had a double date at "Goodbye Lullaby" release party which took place at Sl Lounge in New York City on Tuesday night, March 8. Avril Lavigne tagged along her boyfriend Brody Jenner, while Kim Kardashian attended the bash with her NBA player beau Kris Humphries.

Avril Lavigne kept her rocker chick style by wearing a red-and-black frock and matching it with a pair of boots. Kim Kardashian, meanwhile, rocked tight leather pants and a white long-sleeved blazer. As for the males, they went with all-black ensembles. They were all smiles when walking down the green carpet outside the venue before heading inside to kick off the celebration.

Before, the release dates for Goodbye Lullaby and its lead single were pushed back several times. In response to these delays, Avril Lavigne said, "I write my own music and, therefore, it takes me longer to put out records 'cause I have to live my life to get inspiration," and that she had enough material for two records. In November 2010, Avril Lavigne was featured in Maxim, where she revealed that Goodbye Lullaby took two and a half years to complete, but she cited her record company as the reason for the album's delays, stating that the album had been completed for a year.