In what could be one of the most endearing and hilarious glimpses into Prince Harry and Meghan Markle's relationship yet, they have been caught on camera giggling at Liam Payne.

Yesterday the couple, alongside the other members of the fab four - the Duke and Duchess of Cambridge, and the Queen - headed to Westminster Abbey for Commonwealth Day.

Dressed in head-to-toe white in an Amanda Wakley coat and beret, Markle already looked like she was in a jovial mood.

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Amongst a 2000-strong congregation, which included school children, they were serenaded by a polo-necked Payne.

Once the ex-One Directioner finished his rendition of John Mayer's 'Waiting in the World to Change' he turned to hos guitarists and gave them a couple of pretty cringe-worthy fist bumps.

Then, in a move that may take you back to your time at school, Markle and the Prince slyly turn to each other and stifled giggles.

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The moment, which was caught by the BBC, has since gone viral for obvious reasons - who can't relate to getting the giggles at the exact moment you're not meant to?

And, that wasn't the only time they cracked up, this clip shows the pair laughing during a hymn.

Keep it together people!

Thankfully, the pair composed themselves and continued on.

According to the Daily Mail, the former actress told children on the way out of the service that she is 'very excited' for her wedding, which is on 20th May.

The American activist also told religious education teacher David Swindells and sixth former Liam Maloney from St Cuthbert's Catholic High School in Newcastle that, 'The service was beautiful, especially the choir and the music.'

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Daisy Murray
Digital Fashion Editor

Daisy Murray is the Digital Fashion Editor at ELLE UK, spotlighting emerging designers, sustainable shopping, and celebrity style. Since joining in 2016 as an editorial intern, Daisy has run the gamut of fashion journalism - interviewing Molly Goddard backstage at London Fashion Week, investigating the power of androgynous dressing and celebrating the joys of vintage shopping.