The 34-year-old was scheduled to make an appearance at the Mirage Hotel and Casino, Las Vegas and the organisers of the event charged visitors a fee of USD 150, reported Examiner online.
Fans were surprised to learn they had to pay an additional fee to meet the star and told that they just had to buy something from the store to get her signature.
"Don't they have enough money? Why would I pay USD 450 for my twin 8-year olds and myself meet her and get a picture?