Now this is the kind of battle we like to see!
Stars Jessica Simpson and Kylie Jenner each rocked the same bathing suit within the last few weeks, and both looked stunning -- as if you didn't already know that about those two!
[ Related: Who Snapped The Better Selfie? ]
But of the two of them, who wore it better?! Decide for yourself as you ch-ch-check out the two hotties (below) and then vote in our poll!
First up, Jessica rocked the monokini on a yacht this week, posting this pic to her