Britney Spears Cancels New Madonna Duet

Britney Spears has turned down another chance to perform with Madonna, so she can spend more time with her two sons.

Reports say the singer opted to cancel her Miami duet with the Queen of Pop, as she's been granted custody of Jayden James and Sean Preston until Thanksgiving.

"Britney had always agreed to perform in Miami but her circumstances have changed over the past couple of months," a source tells The Sun.

"She and Kevin are getting along fine now, Britney will have Jayden and Sean just before the holiday and Kevin will spend Thanksgiving day with them."

Britney performed a duet with Madonna last week in Los Angeles.