In the 1990s, the female R&B trio TLC won four Grammy awards and were regulars on the Billboard charts thanks to hits like "No Scrubs" and "Waterfalls." But after the tragic death of Lisa "Left Eye" Lopes in 2002, the two remaining members, Tionne "T-Boz" Watkins and Rozonda "Chilli" Thomas, put their singing careers on hold. Now, seven years later, the ladies are reuniting to play a benefit concert hosted by Justin Timberlake. The show, which will also feature performances by Taylor Swift and Alicia Keys, will take place in Las Vegas at the Mandalay Bay Events Center on October 17. Proceeds will go to help the Shriners Hospitals for Children. Tickets go on sale on August 29.