Kaley Cuoco knows how to spark a Big Bang.
The 30-year-old stunned fans by flashing her bare breast in a Snapchat photo with friend and celebrity stylist Brad Goreski.
The Big Bang Theory actress pulled open her pink dressing gown to free the nipple for the cheeky snap.
But 39-year-old Goreski, who posted the photo, used a red heart emoji to protect his flashy friend's modesty.
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