KUWTK duo: Kim Kardashian West (L) and Kourtney Kardashian (R) kicked off 2019 by hitting the slopes of Buttermilk Ski Area with their children in Aspen on Tuesday

In line for lift: Of all the countless resorts in and around the Colorado hotspot, Butterfield is reportedly considered the easiest mountain for beginner skiers and snowboarders

38-year-old Kim ditched a hat in favor of a headband and neck warmer with her all-black ski gear – Prada parka, matching ski pants, and ski boots.

The KKW Beauty CEO and two staffers could be seen walking with two – daughter North, 5; son Saint, 3 – of her three children with third husband Kanye West.

Kardashian West and the Trump-loving 41-year-old will next celebrate their daughter Chicago’s first birthday on January 15.

Meanwhile, 39-year-old Kourtney appeared to have escorted two – daughter Penelope, 6; and son Reign, 4 – of her three children to the slopes that day.

Mom duty: The half-Armenian socialites were certainly far from their beloved sunny Calabasas as they bundled their blended brood for the wintry downhill adventure

Hair extensions exposed: 38-year-old Kim ditched a hat in favor of a headband and neck warmer with her all-black ski gear – Prada parka, matching ski pants, and ski boots

Takes a village: The KKW Beauty CEO and two staffers (R) could be seen walking with two – daughter North, 5; son Saint, 3 – of her three children with third husband Kanye West

Two weeks away! Kardashian West and the Trump-loving 41-year-old will next celebrate their daughter Chicago’s first birthday on January 15

There was no sign of the University of Arizona grad’s nine-year-old son Mason with ex-partner Scott Disick, who brought his 20-year-old girlfriend Sofia Richie on the Kar-Jenner holiday trip.

The 5ft brunette wore a helmet, goggles, green-hued ski coat, black ski leggings, and white ski boots as she enjoyed the powdery conditions in the Rockies.

Unsurprisingly, Kim remained glued to her iPhone filming all the action by the kids even when she was buckled into her skis.

The wrongful incarceration advocate beamed with pride as her grinning, privileged princess North demonstrated her ‘French fry’ stance sans poles.

Filming the kids: 39-year-old Kourtney (2-R) appeared to have escorted two – daughter Penelope, 6; and son Reign, 4 – of her three children to the slopes that day

Incognito: There was no sign of the University of Arizona grad’s nine-year-old son Mason with ex-partner Scott Disick, whom she split from in 2015

On the move: The 5ft brunette wore a helmet, goggles, green-hued ski coat, black ski leggings, and white ski boots as she enjoyed the powdery conditions in the Rockies

Gloves are off: Unsurprisingly, Kim remained glued to her iPhone filming all the action by the kids even when she was buckled into her skis

The former Celebrity Family Feud contestants appeared to have hired their very own private Buttermilk ski instructor to give the children lessons.

When Kardashian West took one of the ski lifts up the trail, little Saint sat right beside her wearing a large helmet for safety.

And Kourtney kept her little girl Penelope company just behind her younger sister on the same ski lift.

Weeee! The wrongful incarceration advocate beamed with pride as her grinning, privileged princess North demonstrated her ‘French fry’ stance sans poles

Learning: The former Celebrity Family Feud contestants appeared to have hired their very own private Buttermilk ski instructor (red pants) to give the children lessons

Mama’s boy: When Kardashian West took one of the ski lifts up the trail, little Saint sat right beside her wearing a large helmet for safety

Family bonding: Kourtney (L) kept her little girl Penelope company just behind her younger sister on the same ski lift

Despite being miles from any showbiz set, the Glam Masters producer announced Tuesday that she’s ‘ready to serve looks in 2019’ with a BTS snap of herself surrounded by water and ‘hair artist’ Chris Appleton.

By contrast, Kardashian pondered resolutions and tweeted on Monday: ‘I pray that I may carry good things into the year ahead. I pray that I may carry on with faith, with prayer, and with hope.’

The selfie-loving siblings already started filming the 16th season of their reality show in late August as part of their massive $100M deal with the E! Network through 2020 – according to Variety.

Missing LA? The Glam Masters producer announced Tuesday that she’s ‘ready to serve looks in 2019’ with a BTS snap of herself surrounded by water and ‘hair artist’ Chris Appleton

Kardashian pondered resolutions and tweeted on Monday: ‘I pray that I may carry good things into the year ahead. I pray that I may carry on with faith, with prayer, and with hope’

Excited? The selfie-loving siblings already started filming the 16th season of their reality show in late August as part of their massive $100M deal with the E! Network through 2020