Carrie Underwood is doing her part to end hunger. The 'Before He Cheats' singer will join fellow music stars John Mayer, Diana Krall and Stevie Wonder in celebrating Tony Bennett's 85th birthday, an event which will also act as a benefit to raise money for the needy.

The Tony Bennett Live in Concert - Benefit for Drive to End Hunger show is one night only, and takes place at Los Angeles' Staples Center on September 24, just a day after Underwood is lined up to perform at the first I Heart Radio Festival in Vegas. Bennett and his team of musicians have joined hands with the AARP in an effort to end hunger among elderly Americans.

"It is terrific to be working with AARP once again, especially for a cause like ending hunger among older Americans, which often does not get much attention. I know this event will make a big difference and I am thrilled to be a part of it and have some of my favorite musical performers join me for the concert," Bennett said in a press release.

This isn't the first time that Underwood and the iconic Tony Bennett have worked together -- the pair sings 'It Had to Be You' on Bennett's 'Duets II' album, which drops the same week as the concert, on September 20. Additionally, Underwood and Bennett will perform their duet for 'Blue Bloods' fans on the show's season premiere, which airs on September 23.

Tickets for the single-night Tony Bennett Live in Concert - Benefit for Drive to End Hunger event are on sale now through Ticketmaster. To get exclusive behind-the-scenes photos and videos, as well as some free Bennett downloads, visit here.