Kourtney Kardashian joins family chorus to celebrate Travis Barker's daughter Atiana on her birthday

dailymail.co.uk:

Kourtney Kardashian has formed an intense bond with each of Travis Barker's kids since the couple began dating more than a year ago and became engaged in October.The 42-year-old Poosh blogger made sure to send birthday wishes to his oldest stepdaughter, Atiana De La Hoya, on her 23rd birthday Tuesday with a few sweet snaps shared to Instagram.Kourtney and Atiana— who's mother is Shanna Moakler and father is Oscar De La Hoya, and was also lovingly raised with Barker— looked ready to hit the slopes in a few throwback shots posted to her 166million followers.

Birthday girl: The 42-year-old Poosh blogger made sure to send birthday wishes to his oldest stepdaughter, Atiana De La Hoya, on her 23rd birthday Tuesday with a few sweet snaps shared to InstagramKourtney and Atiana looked ready to ride as they zipped up matching jackets and donned helmets in one pic.

The gorgeous redhead basked in the sunlight while waiting to snowboard with her family as Kourt admitted the eldest of the kids was the 'sweetest in all the land.'Travis and Kourtney's union brings together a total of six children.

She has three kids with her ex, Scott Disick— Mason, Penelope and Reign— while he has Alabama, Landon from his previous marriage to Shanna Moakler which ended in 2008.