Celine Dion wasn't holding anything back during a recent show in  Mexico City.

The singer pulled some bizarre poses as she belted out one of her power ballads.

But one shot in particular may go down as one of the most unflattering snaps ever taken of any celebrity. Ever.

Whilst Celine was concentrating hard on hitting the high notes, she was unaware she had flashed her white knickers under her micro-mini pink stage outfit.

Oh dear.

See more of the singer's dodgy faces below