Janet Jackson Opening Amas

Janet Jackson is to open the American Music Awards (AMAs).

The 'All For You' hitmaker will sing a medley to start the 2009 ceremony on November 22, which sees her late brother Michael Jackson - who died of acute Propofol intoxication in June - nominated in five categories.

American Music Awards producer Larry Klein said: "We're thrilled about having Janet Jackson open this year's show.

"She is an incredibly dynamic performer and I think the audience will be excited to see what she has in store."

This will be the fourth AMAs performance for the star, who has won nine of the awards in previous years, and follows her moving tribute to her brother at the 2009 MTV Video Music Awards in September.

It was announced earlier this week Whitney Houston - who has won a huge 21 AMAs from 37 nominations - will be honoured with the International Artist Award and perform her new single 'I Didn't Know My Own Strength' at the star-studded ceremony.

Other stars to perform at this year's AMAs at Los Angeles' Nokia Theatre include Lady GaGa, Eminem, Jay-Z, Shakira, Rihanna, Jennifer Lopez, Green Day, Kelly Clarkson and Carrie Underwood.