Christina Aguilera is apologizing to her fans for canceling her summer tour -- saying she's "truly sorry" about the news.
In a letter on her website, Xtina writes "With both the album press and film press I am booked the entire summerand need time to focus on the work at hand... I realized there was not enough time to puttogether and rehearse for a proper show, one that is at the caliber youexpect from me or at the level I would present to my fans... My album has not even been released as yet and I would like for you allto become familiar with the music before you hear it live on tour."
As for when the tour will actually happen, Christina only said "when the time is right!"
Need an Aguilera fix? She'll be performing on tonight's "American Idol" finale.