Aishwarya, also a filmmaker, said her hour long performance at the UN headquarters in New York was scheduled on March 8.
She said the event was being organised by India's Permanent Mission to UN, and co-sponsored by America Tamil Sangam, a US Tamils association.
Aishwarya thanked Syed Akbarudeen, India's Permanent Representative to the UN for coming up with such an idea during a conversation between the two and said she will be peforming for a series of renditions.
She said it was a "proud moment" for her family, including father 'Superstar' Rajinikanth and husband Dhanush but said none of them would be accompanying her to the US on account of their busy movie schedules.
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Among others, she would be performing for the song "Maithrim Bhajathey", sung by the late MS Subbulakshmi in the UN decades back, to highlight the need for peace, Aishwarya said.
The invitees include those from the 190-member countries and top Indian diplomats, he added.
Aishwarya will also be delivering a talk at Columbia University on Indian Women Filmmakers and will be later felicitated by the Tamil Sangam and Indian Association of Long Island at an event next week, he added.