NEW YORK (Reuters) - Cher will appear on the season finale of the singing competition series "The Voice" on June 18, making her first live TV performance in more than 10 years, NBC said on Monday. The singer and actress, who has won an Oscar as well as Grammy and Emmy awards, will perform "Woman's World," a new single from her album of the same name which is to be released in September, her first in 12 years. Cher's record-breaking 1998 single "Believe" reached No. ...