The Duchess of Cambridge joins the sunshine crew
Here we see their amazing synchrony signalled by their body language. Their postures reflect each other's with a slight tilting towards each other, their smiles are nearly identical and they both stand confidently. But it's the sizzling sexual chemistry that is most important - note how William stands like a classic alpha male with hands on hips, armpits open - a sign that he's 'all man' in this relationship. Kate signals her femininity back towards him with the delicate placement of her hands and arms.