When Penny Lancaster flashed nipples under flashlights!

London, Mar 21 (ANI): Rod Stewart's wife Penny Lancaster yesterday gave shutterbugs an eyeful when she "accidentally" flashed her boobs.

The beauty was wearing a hanging shawl-type knitted dress, which did no justice to her fab figure.

What's more, under bright glare, the woollen fabric turned transparent - exposing the fact that Lancaster was not wearing a bra, reports The Mirror.

The 38-year-old mother showed off her outfit at a special performance of the Dirty Dancing musical in London.

It was as an underwear model for Ultimo that she made her name.

Also at the event was Tess Daly. (ANI)