Beyoncé has apologised for postponing a concert last night (May 14).

As previously reported, the superstar singer cancelled a show in Antwerp, Belgium after feeling dehydrated and exhausted.

In a handwritten note posted online, the 'Grown Woman' star has now said sorry for pulling the show, which will be rescheduled.

Beyoncé, however, also confirmed that tonight's (May 15) show at the same venue in Antwerp will go ahead. She said:

"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."

The singer added: "Thank you for your concern. I'm feeling much better now and I'm ready to give you a great show. See you tonight. All my love, Beyoncé."

Beyoncé is due to travel around Europe until June, when she will take her Mrs. Carter Show tour to North America.