17-year-old Kendall received the gorgeous Great Dane puppy earlier this week as an early birthday gift from older brother Rob Kardashian, in anticipation of her turning 18 on 3 November.
And she is clearly besotted with the latest addition to her huge family, so much so that she has been taking Blu everywhere she goes - even to school!
Yesterday (23 October), Kendall was spotted out with her new puppy at a Fred Segel clothing store in Los Angeles and the pair were joined by younger sister Kylie and a group of pals, including Justin Bieber's best friend Lil Twist.
High fashion model Kendall kept her outfit simple for the outing, wearing all black and a pair of chic brogue-style shoes.
She was seen carrying Blu in her arms, as well as her designer handbag.
Later that day she tweeted: "On another note, I got a new Great Dane puppy and she's awesome".
Kylie, 16, also went for an all black ensemble for their afternoon of retail therapy and wore a black skater skirt, a cropped top and a leather jacket.
The youngest Kardashian sibling completed her look with some sheer tights and a pair of boots.
No doubt the two girls had a lot to tell their friends about, after older sister Kim got engaged on Monday (21 October) in an elaborate proposal party orchestrated by her boyfriend Kanye West.
Kylie, Kendall, Khloe and Kourtney were all present to watch Kanye get down on one knee at a baseball stadium in San Francisco and were elated to see their sister swept off her feet by the grand gesture.
Each of the girls admitted to crying tears of joy watching Kanye's proposal, with Kylie even joking that she and Khloe were also upset about how much their love lives "sucked" in comparison.
Now that the wedding plans are surely underway, we wonder if Kendall can persuade KimYe to let Blu get an invite to the ceremony, since the cute pooch seems to always be by her side!
What do you think of Kendall's new dog? Let us know below, as the best comment each week wins £50!