Sad news for Mariah Carey and Fergie's middle eastern fans - the chart-topping singers have been forced to reschedule their big concert in Dubai!

The "Divas in Dubai" showcase had been scheduled for two days in May, with Mariah and Fergie headlining on the 15th and 16th (respectively). Unfortunately, earlier today Mel Tyler of Midas Promotions - one of the companies putting on the concert - released the following statement:

“The extremely compressed time frame along with unforeseen logistical complications compelled us to move the event later in the year to ensure a show commensurate with the level of success of these world class Artists and the people of Dubai.”

Another producer added, “Mariah and Fergie are disappointed that they won’t be able to perform. They had scheduled this one special event in their calendars and were looking forward to performing for the Dubai fans.”

But it's not all bad news - the promoters are promising to reschedule the big show for the fall. And besides, Mariah's still scheduled to perform at the Time 100 party tonight - she's keeping those legendary vocal cords fresh!

As for Fergie? We're sure she'd have enjoyed the vacation - but it's not like she hasn't taken a trip of her own lately!