Actress bares all in bizarre no make-up selfie!

Kaley Cuoco is usually snapped looking fairly picture-perfect, so we were left a bit confused by her most recent selfie!

The Big Bang Theory actress and her co-star Johnny Galecki posed together for a snap during a break from filming, but they looked more like they'd be out all night partying than actually working.

The pair both had unusually messy hair, with Kaley's pixie cut sticking up from all angles and no visible make-up except for some leftover eyeliner under her eyes. Very classy!

Kaley posted the photo on her second Instagram page, which she has named after her dog Norman. Cute! The picture was captioned, "@sanctionedjohnnygalecki and I working hard today. We need hair and makeup. Badly."

Wonder what they'd been getting up to pre-photo!

Later in the day Kaley posted a cast shot of the whole BBT gang, with her and Johnny looking decidedly more groomed:

The glam squad did a good job, so!