Britney Spears has joined the upcoming Whitney Houston Tv tribute as a host. The pop star reveals she is "both honored and humbled" to help introduce segments at the We Will Always Love You: A Grammy Salute to Whitney Houston, which will also feature appearances from Taraji P. Henson, LL Cool J and Halle Berry, and performances from Usher, Jennifer Hudson and Celine Dion. The event will be taped in Los Angeles on Thursday (11Oct12) and will air in November (12).