At first glance, the Diamonds singer looks like she is smiling politely through an obligatory group grip’n’grin with model Cara Delevingne and designer Stella McCartney.

However, not every picture tells the full story of the night at the ball.

McCartney,was secretly seizing the moment to cop a squeeze of Rihanna’s backside as the trio were joined by US actresses Reese Witherspoon, and Kate Bosworth.

That didn’t sit well with RiRi’s close friend Cara who moved McCartney’s hand away so she could enjoy her own grope of the Barbadian’s famous Barbadian’s rear.

RiRi giggled nervously as she quickly found herself the meat in a frisky all female celebrity sandwich.

McCarteney then decided to go one better by planting a glossy kiss on the singer’s real cheek.

It certainly earned her daggers from Delevingne, who is rumoured to be getting close to her confidante Rihanna.

But the models wandering hands were greeted with a glance from RiRi seemingly warning there were cameras watching from every angle when she later cuddled up alone with Delevingne.

By Metro UK