PHOTOS: See Rihanna In Bikini Doing Sexy Upside Down Twerking

Popular singer, Rihanna has set pulses racing with her latest hot and sexy Instagram photo-shoot, striking a series of seductive poses while wearing a black bikini.

As she continues to travel the world as part of her mammoth Diamonds Tour, the 'Pour it up' singer has
shared lots of sexy bikini snaps from her latest stop, Greece.

Rihanna injected some energy into the shoot, displaying her twerking skills, positioning her butt in the air.