Theirs is a relationship filled with laughter.
Right from their first public date – when Charlene Wittstock was spotted in fits of giggles – it was clear that the Zimbabwe-born beauty and Prince Albert share the same sense of fun.
And Prince Albert's playful side was on display again on Tuesday, as he once again had his pretty fiancée smiling widely at his antics at the Monte Carlo Circus Festival.
The Monegasque royal donned a wig that made him resemble one of the circus fest's award winning clowns, Bello Nock.
Charlene had more than one reason to smile that day, as she was also celebrating her 33rd birthday.
Photo: © PA