Simplify the following text for a Grade 6 native English-speaking person.
Original: Nicole Prescovia Elikolani Valiente Scherzinger ( born June 29 , 1978 ) is an American singer , songwriter , dancer and occasional actress who is best known as the lead singer of the Pussycat Dolls .
Simplified: Nicole Scherzinger ( born June 29 , 1978 ) is an American actress and singer .