Hold up -- could Kendall Jenner be dating her BFFs' bro?!

Supermodel Kendall Jenner -- who's 20 -- was hanging with Anwar Hadid -- who's 17! -- on Sunday, along with some other pals, including Tyler the Creator, at Barnes and Noble in Calabasas. No doubt, they were all stocking up on Shakespeare and Proust, enjoying their lollipops and looking forward to the book club reading they were about to do back at Kendall's crib ...

Anyway -- so Gigi and Bella's younger brother Anwar is also a model, a hottie and cool enough to hang with Kendall and her pals ... and maybe cool enough to date the "it" girl? We think so!

How did this random group end up together? Do you think Tyler the Creator sent a mass text and was like, "Hey, y'all -- who wants to go to Barnes & Noble on this beautiful Sunday afternoon?"

However this motley crew got together, it seems like there could definitely be something going on between Kendall and Anwar: Exhibit A -- if you notice in our photos, Anwar is carrying Kendall's keys (the pink pompom is hard to miss) and people let boyfriends (not friends) drive their cars. Exhibit B: we spied Kendall's Instagram from a few weeks back where she claimed "dibs" on Anwar. HELLO, THIS IS HAPPENING.


A photo posted by Kendall (@kendalljenner) on