Golf superstar Paige Spiranac went balls-out for a new advertising campaign -- completely ditching her clothes and jumping into a bathtub full of product to promote new golf balls!!
The viral sensation -- who boasts a whopping 3.7 million followers on Instagram -- showed off the steamy ad on her page on Tuesday ... simply captioning the post, "Got balls?"
As it turns out, the photo shoot was in collaboration with L.A. Golf, which just dropped its newest batch of balls.
The pics pay homage to former LPGA star Jan Stephenson, who famously posed nude in a tub of balls back in the '80s, which was pretty controversial at the time.