To My Dearest Fans in Antwerp,
I've never postponed a show in my life. It was very hard for me. I promise I will make it up very soon. I'm sorry if I disappointed you.
Thank you for your concern. I'm feeling much better now, and I'm ready to give you a great show. See you tonight.
The 31-year-old Single Ladies singer canceled her Tuesday concert in Belgium due to dehydration and exhaustion, The Associated Press reports. The show will be rescheduled and tickets can be used at that show.