Kourtney Kardashian exudes confidence in a glamorous postpartum ensemble nearly two months after welcoming fourth child: ‘When not much in the closet fits yet!’

Kourtney Kardashian confidently showed off her postpartum frame in a glamorous ensemble in new Instagram photos shared Tuesday.

The 44-year-old Poosh founder – who welcomed her fourth child last month in November – wore the outfit while attending her family's annual star-studded Christmas Eve party over the weekend.

In the caption of the post, she explained to her 224 million fans and followers: “If the closet doesn't fit much yet and the breasts are filled with milk, put on a warm coat.”

The reality star turned heads as he put on a leggy display while wearing a long, black fluffy coat that clipped at the front.

Underneath, the TV personality also opted for a black bodysuit and sheer black tights to coincide with the monochrome color scheme.

She donned a pair of closed-toed heels that featured silver, sparkly detailing and secured with thin straps that wrapped around her ankles.

Kourtney accessorized the outfit with mini earrings and a glittering necklace for some eye-catching flair.

Her dark locks were pulled back into a sleek ponytail, preventing any stray strands from falling on her face.

The beauty struck a few poses as she stood in front of a plain, white wall to show off her fashionable look during the festive night out.

The mother-of-four also carried a short film reel as she turned to the camera and flashed a big smile in front of a lit-up Christmas tree.

Social media users and celebrities jumped to the comments section to share their positive and encouraging thoughts, including her sister Khloe, who wrote, “If you're a badass anyway.”

Olivia Pierson typed, “You looked so beautiful ,” while Stassi Schroeder added, “YES.” Pregnant Miranda Kerr also joined in by typing a fire emoji.

Kourtney notably wore the stylish coat while attending the annual Kardashian/Jenner Christmas Eve bash – which this year was hosted by her younger sister Kim at her Calabasas mansion.

The large estate was covered with fake snow, so that guests could imagine themselves in a winter wonderland.

Babyface was one of the celebrity guests and also performed at the glitzy affair. Last year, Sia notably performed at the annual party, which was hosted by Kourtney.

Other stars who stopped by to take part in the holiday festivities included Paris Hilton, her sister Nicky Hilton.

The party was notably sponsored by Coca Cola, and glass soda bottle labels had “Kardashian-Jenner Christmas Eve Party 2023” printed on them.

And late last week, shortly before the holidays, Kourtney and her husband Travis Barker shared a first look at their son, Rocky, in sweet family holiday photos on Instagram.

The Poosh founder simply captioned the carousel of photos with “ROCKY,” followed by a black heart emoji.

In the first photo, Kourtney was seen resting her head on the musician's lap as the couple paused for a photo while sitting on the floor. Barker gently held Rocky as he supported him against his shoulder.

In another snap, Kourtney was seen gently holding her seven-week-old son in her arms as she lovingly looked down at him as she breastfed.

She wore a black hoodie that color matched Rocky's ensemble which consisted of black velvet sweats.

The mother of four also included a black and white image of Travis giving his son a kiss. The drummer was seen wearing a black hooded sweatshirt to match his wife's ensemble for the family photos.

Another photo was taken as Barker stood in front of a Christmas tree decorated with lights. Rocky's tiny feet could be seen in the image as the star held their son in his arms.

Finally, Kourtney added a wink to her 224 million followers of Travis, gently placing his hand on their son's back while resting on the drummer's stomach.

She also took a big step last week and started her “first day at the gym” since welcoming baby Rocky.

She recently shared another photo of herself spending time on a treadmill, saying, “doing the most important job in the world… being a mom.”

The star also added: 'I'm taking the time to slowly get back into some uphill walks on the treadmill when I can sneak them in, along with my walks outside in the stroller. be kind to yourself.'

Earlier last month, on November 1, the Kardashians star gave birth to their baby boy – just two months after undergoing 'terrifying' fetal surgery to save her unborn son's life.

At the time of the baby announcement, both Barker and Kylie Jenner were spotted at Cedars-Sinai Medical Center in Los Angeles.

The businesswoman also shares Mason, 14, Penelope, 11, and Reign, nine, with ex Scott Disick. Travis is also dad to Landon, 20, and Alabama, 18, who he welcomed with ex Shanna Moakler.

The Blink-182 member also remained close to Atiana De La Hoya, 24 – Moakler's daughter from her previous relationship with Oscar De La Hoya.

Kourtney also embraced the Christmas holiday by sharing snaps of stockings filled with candy canes, including one for herself and her son, Rocky. She also showed a glimpse of tasty cookies made for Sinterklaas.