Khloe Kardashian I Took A Bigger Plunge ... Than Kourtney

4/29/2016 7:14 AM PDT

Khloe Kardashian: I Took A Bigger Plunge Than Kourtney

Khloe and Kourtney Kardashian were mired in sibling rivalry Thursday as they left Gigi Hadid's 21st birthday soiree.

Khloe FTW!