Paula Abdul announced that her Straight Up! to Canada Tour has been cancelled. The 21-city tour was slated to launch Sept. 25 in Victoria, British Columbia, with Taylor Dayne and Tiffany scheduled as opening acts.

"It's with an incredibly heavy heart that I need to share with you an update regarding some injuries I've recently sustained," the Grammy winner wrote in a statement posted to social media. "In an effort to keep going, I've received targeted injections that will allow me temporary relief, but the demands of an entire tour is a different story.

"After multiple consultations with my doctors and exploring all available options, I've been advised that one of my injuries requires a minor procedure followed by a 6-8 week recovery time, therefore it will prohibit me from proceeding with the Straight Up! To Canada Tour as well as the dates in Alaska and North Dakota," she added.

She continued, "I want to extend my deepest apologies to all my amazing fans in Canada and the US, you mean the world to me and this truly breaks my heart." Although another date for the tour has not yet been announced, Abdul wrote, "I promise I'll be back, stronger and better, dancing my heart out and performing for all of you very soon, to give you the show you deserve."