VIRAL: Nadine Lustre as Sarah G's backup singer [video]

An old video posted by Myraquel Lustre, mother of Nadine, which shows the singer-actress as Sarah Geronimo's backup singer, has gone viral.

In the Instagram video, Sarah is seen performing The Wonder Girls hit dance tune "Nobody" while Nadine provides the backup vocals with her group.

Before going solo, Nadine was a member of the all-girl quintet group Pop Girls, which was formed in 2009 by Viva Entertainment top honcho Vic del Rosario.

It was composed of Dutch mestiza Rosalie Van Ginkel, half-Lebanese twins Lailah and Mariam Baustria, half Swiss Shy Carlos, and Nadine, the only pure Pinay.

The video was taken during Sarah's "Record Breaker" concert. Nadine was 15 years old back then.

Watch the full video of their performance: