We know she's one fit momma, but that doesn't mean she wants to show off all the goods!
We're not so used to one of the Kardashian sisters going so low-key while soaking in the sun, but Kourtney definitely still shines in this simple one-piece.
We just hope next time she rocks those curves for everyone's viewing pleasure! LOLz!
Ch-ch-check out more pics of Kourtney at the beach (below)!
[Image via OHPIX/BauerGriffinOnline.]