28. Geri Halliwell

In 2001, former Spice Girl, Geri Halliwell went to Oman with the band Steps, to perform for the British troops stationed in the Middle Eastern country. Despite being paid a hefty sum by the British Ministry of Defense, the singer demanded that all footage of her performance be exclusively shot by her staff, which means that no other person, including the troops, were allowed to take pictures or videos of the event.

Not only that, Halliwell also booked an entire hotel floor at the Hilton for the sole purpose of avoiding the band she was there to perform with, Steps.