He was a day early for Throwback Thursday, but this star decided to throwback to a time when Snapchat was all about sending saucy snaps of yourself.

Kaley Cuoco dared to bare on Wednesday night while trying on looks with stylist Brad Goreski. The 30-year-old actress ensured she made a big bang on the social media app by exposing her entire right breast on her pal's Snapchat.

Dared to bare: Kaley Cuoco ensured she made a big bang on social media on Wednesday by exposing her entire right breast on her pal Brad Goreski's Snapchat. It was only thanks to the creative positioning of a heart-shaped sticker on the photo which stopped the Big Bang Theory star exposing all.

While Brad - who snapped himself while using the new 'old man' filter - decided to do a little cover up after the fact, it still made for a very racy picture. In the photo, Kaley pulled her robe to one side showing off her surgically enhanced bust while her 39-year-old stylist pointed directly at her nipple.

Kaley had a breast enlargement back when she was just 18, and has previously described it as the best decision she ever made. She told Redbook two years ago: 'I had no boobs! And it really was the best thing ever. I always felt ill-proportioned. 

'My implants made me feel more confident in my body. It wasn't about trying to be a porn star or wanting to look hot and sexy.'

The actress is on a kick of not holding back of late. On Tuesday, the actress gushed to Extra about her new romance with equestrian Karl Cook.