She's nothing if not predictable.

Kylie Jenner marked turning 21-years-old with a wild party, but she also posed for a birthday-themed photoshoot! The LipKit queen ate cake on the kitchen counter for the shots, and it's pretty amazing how she can make stuffing your face still look sexy.

Baby daddy Travis Scott was smart to steal her away from Tyga.

Speaking of which, rumor has it the young billionaire and the rapper might be ready to tie the knot in secret!

“Kris is a little worried that Kylie might elope with Travis. He’s planning a special surprise for Kylie’s 21st birthday and Kris fears he might whisk Kylie off and marry her without any warning. Kris loves Travis and wants him as a son-in-law but she definitely wants to be there for the wedding," a source dished to Hollywood Life.

"Kris also wants to protect her billionaire daughter. She wants lots of advance notice of any wedding to get that prenup locked into place. The problem is Kylie’s very unpredictable and cannot be told what to do. If Travis asks her to elope for her birthday she may just say yes," the source added.

She's always been way beyond her years.