What a sweet New Year’s Eve to the Keeping Up with the Kardashians reality star. Kourtney Kardashian spends time with her 12-month-old son, Reign, on Thursday, Dec. 31.

The 36-year-old star gave his youngest son a kiss on New Year’s Eve as she shares on her social media account an adorable snap.

 My New Year's kiss...

A photo posted by Kourtney Kardashian (@kourtneykardash) on Dec 31, 2015 at 9:05pm PST

According to Us Weekly, Reign’s dad is Kardashian’s ex boyfriend Scott Disick, whom she was in a relationship with for nine years. The former couple are also parents to Mason, 6, and Penelope, 3. The two split in July after the self-proclaimed "Lord," 32, was photographed getting cozy with ex Chloe Bartoli while vacationing in the South of France.

Kourtney Kardashian 2015: Reality Star Focusing On Faith, Fitness, And Travel On 2016?

Recently on a sneak peek of Keeping Up with the Kardashians' Sunday’s episode, the mom of three reveals why she’s “not a dating person” after her mom, Kris Jenner, 60, asks her why she doesn’t date. "I'm just telling you to keep an open mind,” the momager says to her eldest daughter. "It would be kind of cool if you … went on a date.”

While Kourtney spends time with her love ones, Scott Disick on the other hand, went partying on New Year’s Eve.

Scott Disick News: Is Kourtney Kardashian's Ex Back To His Old Ways?

According to Entertainment Tonight, Disick appeared at 1 Oak Nightclub in Las Vegas, marking his first post-rehab club appearance. Despite being photographed surrounded by scantily clad dancers, the 32-year-old reality star was on his best behavior. Clad in a Tom Ford suit, a source tells ET that Scott sipped water all night and seemed “very happy and positive,” surrounded by his friends.

Reports also dished out that the father of three didn’t spend too much time in Sin City, either. Following an epic countdown to the New Year, Disick hopped on a private jet back to Los Angeles.

 Happy new year! La I'm coming home

A photo posted by Scott Disick (@letthelordbewithyou) on Jan 1, 2016 at 1:34am PST

Tags: kourtney kardashian new year's eve son Reign scott disick