Paulina Gretzky and fiance Dustin Johnson are expecting their first child together!

Paulina, 25, posted the above photo on Instagram and wrote, "@djohnsonpga & i are so excited to finally share with you all our amazing news..we're having a baby!!" She looks like she's about 6 months along, so this totally took us by surprise!

As you might know, Johnson made the news this summer when he was reportedly kicked off the PGA Tour following a failed drug test, and he's currently on a six-month suspension. Though the PGA has yet to confirm Johnson has actually been suspended, the athlete did state on July 31 that he was taking an "indefinite leave of absence" from the tour to seek professional help to address "personal challenges."

The pro golfer allegedly tested positive for cocaine earlier this year, and according to reports, he also tested positive for the drug in 2012 -- and marijuana in 2009. Seems like he's been spending more time at the clubs than with his clubs, which is a shame because this July he was still ranked 16th in the world by Golf.com. But perhaps he's found a way to make the most of his leave of absence?

Paulina, whose dad is hockey legend Wayne Gretzky, started dating Dustin in 2012, and the two got engaged last year. Wayne reportedly warned Dustin to get his life in order or he'd put a stop to the wedding, so we have to wonder about the timing of all this...