Avril Lavigne Dressed Like 14-Year-Old To Her Albums Release Party

I think Avril Lavigne's forgotten how old she is because the ?26-year-old divorced musician showed up to her new album 'Goodbye Lullaby' release party in a get-up meant to be worn by a middle schooler.

It looks like she's trying too hard, it's ridiculous!

Avril is currently dating Brody Jenner, Kim Kardashian's stepbrother. She was previously married to Sum 41 singer Deryck Whibley but the two divorced in 2010.  This is Avril's latest album to be released in the last 4 years.

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Avril Lavigne and Deryck Whibley have spilt

Singer Avil Lavigne supposedly asked her husband of two years, Deryck Whibley to move out of their Los Angeles mansion and called quits on their relationship.

“She dumped him and told him she was leaving him," a source told Us Weekly Magazine. "She wants to move on. Divorce papers will be filed any day now.”

Sum 41 rocker Deryck is apparently “crushed” by Avril’s decision, and wanted to work through their problems.

Avril, 24, is so determined to move on from the relationship she has decided to ditch the tracks from her forthcoming album which she worked on with Deryck.

“She is going to do new songs that don't have his mark on them," a friend told the magazine. "She wants no trace of him.”

Rumors about their marital problems have been circulating for months, with Avril often seen partying with friends without her husband.

In June, Deryck went to the Los Angeles premiere of 'Transformers: Revenge of the Fallen' alone, while Avril spent a week in Saint-Tropez with pals.

Deryck, 29, was not present at New York Fashion Week on Monday (9-14-09) when Avril revealed her clothing line.

Deryck’s representative did not comment on the report and Avril’s could not be reache