It's official! Paulina Gretzky and Dustin Johnson are having a baby

Dustin Johnson's fiance and Golf Digest cover girl Paulina Gretzky announced via her Instagram account late Tuesday evening that the pair are having a baby.

"@djohnsonpga & i are so excited to finally share with you all our amazing news..we're having a baby!!" she wrote.

Gretzky and Johnson, who is currently on indefinite leave from the PGA Tour, have been together since 2011, and have been engaged since 2013. Here's a slideshow of some of their most memorable moments.