"I'm all for performing, especially when it's young ones who feel isolated or displaced," she said.
"Being the 10th anniversary, it's a pretty special time."
LiveJam is a series of concerts in Auckland, Wellington, Hamilton and Christchurch. Fans who can't make it on the day can watch the concert online at starjam.org/livejam.
Other celebrities taking part including Simon Dallow, Ray Woolf and Shane Cortese.