The singer will release 'Lovebird' on December 3 as the second cut to be lifted from her recent album Glassheart.
The track was co-written by Bonnie McKee (Katy Perry, Britney Spears), Joshua Coleman and Lukasz 'Dr Luke' Gottwald (Ke$ha, Rihanna).
Lewis previously announced 'Fireflies' as her new single, but that release has been postponed until further confirmation.
The star will perform a track from Glassheart on tomorrow night's (November 16) Children In Need show.
Lewis will also perform a concert for the Hopefield Animal Sanctuary in Brentwood on December 2.
Listen to Leona Lewis's new single 'Lovebird' below: