When did Audrey Hepburn say her ';I believe in manicures'; quote?

';I believe in manicures. I believe in overdressing. I believe in primping at leisure and wearing lipstick. I believe in PINK. I believe that loving is the best calorie burner. I believe in french kissing. I believe that happy girls are the prettiest girls. I believe that tomorrow is another day and I believe in miracles.';