'Heartsick'has postponed part of her Born This Way Ball Tour after revealing she is unable to walk because of a serious injury.
The 26-year-old said she was heartsick about letting her fans down, admitting she had been trying to hide her injury and chronic pain from fans.
"To the fans in Chicago, Detroit & Hamilton. I hope you can forgive me, as it is nearly impossible for me to forgive myself. I'm devastated & sad," she tweeted."It will hopefully heal as soon as possible, I hate this. I hate this so much. I love you and I'm sorry."Performances on 13 and 14 February in Chicago and 16 February in Detroit will now be rescheduled. She has also postponed a concert in Canada on 17 February in Hamilton, Ontario.The new dates for these shows are yet to be announced.It is thought the pop star will be well enough to perform again in Philadelphia on 19 February.