Olympics Star McKayla Maroney is Social Media Bikini Sensation (PHOTOS)

She was just 16 for the London summer games.

Now she's all grown up and posting bodacious bikini breast shots to Twitter and Instagram.

Hawt!

Here, "Gymnastics Star McKayla Maroney Sizzles on Social Media in Smokin' Hot Busty Shots on Social Media."

Those are some pert breasts.

I think she's angling for some fashion model cover shots, heh.