Caption this photo with Rihanna.  At a recent stop on her successful, sold out LOUD tour, the ‘If It’s Lovin’ That You Want’ singer was surprised when a fan dropped to one knee to propose to his girlfriend (both seen in the photo).  No word if the girlfriend accepted or if while down on one knee the man proposed Rihanna get vocal lessons.

Possibly overjoyed from the occasion, Riri took the opportunity to grab a few boobs.  See these photos and more below:

Your thoughts?