Kylie Jenner -- Tush & Cakeos ... More Vacay Bunnage (PHOTO GALLERY)

Kylie Jenner's birthday vacay continues to be the gift that keeps on giving ... to all of us.

KJ's still down in Turks and Caicos with Tyga and her squad. We're guessing she decided to celebrate that Tyga's a free man again by freeing something herself ... dat ass.