Today is National Bikini Day, but there are some celebrities who make us wonder if they own anything besides two-piece swimsuits!

Not only do some of the world's hottest celebrities like Kim Kardashian seem to put on a bikini at every possible moment, they constantly post these photos on Twitter and Instagram for the world to see! Check out our round-up of the top celebrity bikini pic oversharers!

What famous face has gained a huge Twitter following due in part to her "Thong Thursday" pics? Find out after the jump!