Oops, he did it again.

US Magazine ran a picture of comments Kevin Federline allegedly wrote against his soon-to-be ex-wife Britney Spears on the shower door in his dressing room at the House of Blues in Chicago where he performed last week. It happened to be the day after Spears filed for divorce. A story on US Online says that the signature on the door matches a signature on a poster he signed for the magazine.

Tickets to his show at the House of Blues in Chicago cost absolutely nothing because they hadn’t been selling. This comes after he postponed a concert at Webster Hall in New York a few days earlier for three hours because only 300 people showed up. The venue has a capacity of 1,500. Kevin begged to perform, and then was only on stage for 30 minutes, hoping that more fans would arrive. Another concert in Cleveland was cancelled.

Spears’ career is faring better. She’s already begun working on a new album, and recently returned home to Kentwood, La. with her sons Sean Preston,1, and Jaden James, 8 months. Friends say the 24-year-old mother is looks beautiful and “is happy and doing just fine.”

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