Prince William sends Royal fans wild as he jokes about sweet wife Kate Middleton

Prince William, who's on eight-day royal tour of Caribbean with his wife,  left Kate Middleton in a fit of giggles with a joke, saying 'I'm out of my depth here'.

The Duke and Duchess of Cambridge chatted with the trainee teachers, before William jokingly said: "I'm out of my depth here! I'm listening."

The group teachers erupted with laughter while the Duke pretended to shrug, and his sweet wife responded: "No you're not! You hear me chatting about it."

The couple left royal fans swooning over their candid moment, with one fan on Twitter wrote: "He is such a supportive husband".

Another responded as saying: "I love when he gives Catherine the space to shine in her field."

A third tweeted: "This is cute! Prince William said: "This is your day, darling. Your thing.' Catherine immediately: "Okay then..." That was definitely her thing!"

Kate Middleton and Prince William are collecting lots of good memories and also engaging the royal fans to share their thoughts on their fun-filled tour as couple.