Paulina Gretzky, known for posting racy photos on social media, took to Instagram to announce the sex of her expected child on Christmas.

Paulina Gretzky Has The Best Baby Shower Ever, Complete With Live Music & Close Friends

On Thursday, Paulina Gretzky announced on her Instagram that she and fiance Dustin Johnson are expecting a baby boy.

The photo shows Gretzky posing in a sheer, black gown next to Johnson and her brother who are both dressed in black suits. The caption of the photo read: "Merry Christmas everyone!! Ps..We're having a BOY"

After Paulina Gretzky's Pregnancy Announcement, Fiancé Dustin Johnson Is 'Happy & Healthy' 

Gretzky first announced her pregnancy in September and celebrated her baby shower in early December.

According to the Huffington Post, the 26-year-old model was gifted items from Pottery Barn for her babyshower, including a $1,120 changing tables, a $900 dresser and an $800 crib.

The registry also reportedly included a few blue items that hinted toward the sex of her baby being a boy. She had a navy Gingham Nursery robe and a white onesie that read, "My daddy golfs better than your daddy," on the registry.

According to Golf Channel, Johnson remains on leave of absence from the PGA tour. An insider told the publication that he plans to return to the tour after Gretzky gives birth in January.

Golf.com revealed in August that Johnson was actually derving a six-month suspension from the PGA Tour at the Farmers Insurance Open at Torrey Pines for a third failed drug test.

Tags: Paulina Gretzky