One iconic female singer and one iconic R & B band continue their Vegas residencies with shows this weekend. Still going strong at age 71, Cher performs tonight, Saturday night, and next Wednesday night at 8pm at the Park Theater at the Monte Carlo. Tickets start at $60 and are available through Ticketmaster. The "Elements of the Universe" Earth, Wind & Fire also perform tonight, Saturday night and next Wednesday night at the Theater at the Venetian. Tickets start at $59. Also performing this weekend, Pitbull will be jamming at Zappos Theater at Planet Hollywood, tonight, tomorrow night and next Wednesday at 9pm, and the legendary Elton John is at the Colosseum at Caesars Palace tonight through Sunday at 7:30pm.