'Full House' Kim Kardashian poses in matching pajamas with her kids and niece

By Vasantha

Besides being a mom, Kim Kardashian is an aunt, making precious memories during the holiday season.

Chicago, 4, and Saint, 7, both dressed in matching snowflake-printed Christmas pajamas, stood on a white chair at her home Thursday. Saint sticks his tongue out and ditches his shirt. Kim's nieces Dream, 5, and True, 4, from Rob Kardashian and Khloé Kardashian are also there.

" A full house," Kim captioned the series of photos in which cute posing is quickly replaced with laughter and kids jumping about. Kourtney Kardashian, 42, shared on her Instagram Story a heartfelt birthday tribute to Mason Disick earlier this week to celebrate his 13th birthday.

A proud aunt wrote, "You are now taller than me.". Mason, I love you and I'm proud of you. Happy Birthday as you enter your teenage years." Two aunts and nephews stand back to back, separated by backpacks. This laid-back photo shows Mason with shaggy hair, sunglasses, a t-shirt, and sweatpants.

There's a sweet bond between the Kardashian-Jenner sisters and their children. During sister Kourtney's wedding to Travis Barker in May, Kim gave fans a look behind-the-scenes.

With one hand holding son Reign, the Dolce & Gabbana bride squeezed North's cheeks while holding son Reign with the other.

The two were also pictured wearing matching black outfits in other photos. North and her mom shared a kiss in one photo, while her aunt Khloé Kardashian and her mom took a mirror selfie in another.