Avril Lavigne: Album Release Party with Kim Kardashian!

Avril Lavigne celebrates the release of her fourth studio album, Goodbye Lullaby, with boyfriend Brody Jenner on Tuesday (March 8) at SL Lounge in New York City.

The couple double dated with Brody‘s stepsister Kim Kardashian and her beau, NBA player Kris Humphries, at the Onitsuka Tiger, Ciroc Vodka, and RCA Records-sponsored bash.

Avril, 26, recently dished about working with super producer Max Martin on Goodbye Lullaby.

“I flew out to Sweden for a couple weeks, sat down, played him my record, got to know each other, wrote some songs together, and then I was out,” she told MTV News. “It switched it up for me. It was a new creative space, a new relationship, and we got a lot done. He’s very talented.”

FYI: Avril is wearing a Betsey Johnson dress.

15+ pictures inside of Avril Lavigne at her album release party…