Britney Spears has reportedly laughed at husband Kevin Federline's attempts at a pop career.

Sources claim the new mom wasn't impressed by the former dancer's first recordings when he brought them home to play for her.

A friend revealed to America's In Touch Weekly magazine: "His efforts were greeted with hurtful laughter from his superstar wife, who was unimpressed. She said his debut CD might sell 'a hundred, maybe a thousand' copies if he was lucky. Kevin looked really hurt."

Meanwhile, Britney is said to be upset that Kevin is not spending enough time helping her with their baby son, Sean Preston.

Insiders claims she was particularly annoyed when her husband spent two hours having his hair braided, while she was left to change the baby's nappies.

Kevin, who has two children with ex-girlfriend Shar Jackson, has also reportedly been avoiding his fatherly duties by partying till the early hours at nightclubs.

An onlooker revealed to the magazine: "He seemed kind of out of it. Everyone was like, Go home to your family. Isn't it a bit soon to be out partying?"