Kourtney Kardashian has tried on so many swimsuits that can be considered "extreme," we don't even know where to begin. From racy cutouts to cheeky thong fits, Kourt has worn it all. Perhaps that's why we were surprised to see her in something so simple: a black two-piece that felt so utterly sexy based on the fact that it fit her so well. "Photo by mason," Kourtney titled the snap on Instagram, which is presumably from a beach day she enjoyed with her kids. While Kourtney's retro sunglasses were on the trendier side, her classic bikini is exactly what you need to be shopping for to feel confident this season. Read ahead to get the look in a snap.