Cheek of the Week ... Hailey Bieber's Beach Buns Take Center Stage

Ya she's got that yummy-yum ... Hailey Bieber's recent Instagram post secured her spot as TMZ's Cheek of the Week, and we're not the only ones marveling over her hot summer physique ... Justine Skye entered the chat with, "*Plays Favorite Girl -…

By TMZ Staff