Gloria Estefan made a surprise appearance at the Miami auditions for the US version of 'The X Factor'

The 'Dr. Beat' singer ' who live in the exclusive Star Island section of Miami Beach ' unexpectedly arrived at the Bank United Center on Thursday (07.04.11) and gave words of encouragement to over 7,500 pop hopefuls waiting to see producers.She told the auditionees: ' hope all of you have a great day and remember to go all out! You've got one shot - one chance, so make sure you give it your all."