His unimpressed expression became one of the most memorable moments of Saturday's Royal Wedding. 

And Rick Hoffman finally revealed why he looked so uncomfortable as he shared his somewhat smelly experience of the star-studded nuptials on Twitter. 

The actor, 47 - who starred alongside royal bride Meghan Markle in the US legal drama Suits - looked grumpy throughout the ceremony, but it wasn't boredom that caused the cringing look - but someone's bad breath.

Sassy: Rick shared the real reason behind his unimpressed face at the Royal Wedding on Instagram

Sassy: Meghan Markle's Suits co-star Rick Hoffman shared the real reason behind his unimpressed face at the Royal Wedding on Instagram on Saturday

Rick - who had already changed out of his dapper black suit and waistcoat - took to Instagram following the royal event, and broke the reception protocol banning phones, to share with fans exactly why his meme-worthy face happened.

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The New York native titled his video 'Royal Wedding Face #Brushyourteeth' as he explained what happened.  

Rick told his fans: 'So to answer any questions about the weird face that was made at the wedding, imagine sitting next to people to your right - not knowing which person it was - that has halitosis'.

Troublesome: Rick - who had already changed out of his dapper black suit and waistcoat - took to Instagram to share with fans exactly why his meme-worthy face happened

Troublesome: Rick - who had already changed out of his dapper black suit and waistcoat - took to Instagram to share with fans exactly why his meme-worthy face happened

Gross! Rick told his fans: 'So to answer any questions about the weird face that was made at the wedding, imagine sitting next to people to your right... that has halitosis' Not happy: The New York native titled his video 'Royal Wedding Face #Brushyourteeth' as he explained what happened

Gross! Rick told his fans: 'So to answer any questions about the weird face that was made at the wedding, imagine sitting next to people to your right... that has halitosis'

'Um. Hence the face. That is apparently all over the place. So it's as simple as that, Charlie. Love you guys. Yah. Halitosis. Disgusting.' 

Rick plays sarcastic lawyer Louis Litt on the hit USA show, and fans were quick point out the similar characteristics between Rick and his on-screen alter-ego. 

'When the wedding isn't as Litt as they promised' wrote one amused fan. 

In character: Rick plays sarcastic lawyer Louis Litt on the hit USA show, and fans were quick point out the similar characteristics between Rick and his on-screen alter-ego

In character: Rick plays sarcastic lawyer Louis Litt on the hit USA show, and fans were quick point out the similar characteristics between Rick and his on-screen alter-ego

'Rick Hoffman aka Louis Litt from #Suits just said he made *that* face during the wedding because someone next to him had bad breath. If that's not the most Louis Litt thing ever, I don't know what is (it's also kinda mean, omg).'

'How did Rick Hoffman time it so well that he pulled a classic Louis Litt face when the camera zoomed at the wedding?' remarked a third viewer. 

While it's not known who the actor was sitting next two, Rick was not the only Suits cast member to join in the festivities, with Patrick J. Adams, who was Meghan's on-screen husband on the show, arrived along with his actress wife Troian Bellisario. 

'A classic Litt face': Fans took to Twitter after spotting the hilarious side-eye from Rick

'A classic Litt face': Fans took to Twitter after spotting the hilarious side-eye from Rick

The other cast members spotted arriving with their respective partners included Gabriel Macht, Sarah Rafferty, Gina Torres and Abigail Spencer.

The Suits cohort were all seated near each other inside the church for the lavish ceremony. 

Meghan's on-screen husband Patrick donned a classic suit, while his Pretty Little Liars star wife opted for an embellished bell-sleeved cream dress.

Dapper style: Before changing for the reception, Rick looked sharp in a black coat and tails with a grey suit underneath

Dapper style: Before changing for the reception, Rick looked sharp in a black coat and tails with a grey suit underneath

Sharp: Rick walked alongside Patrick J Adams - who was Meghan's on-screen husband on the show, as well as Patrick's wife Troian Bellisario

Sharp: Rick walked alongside Patrick J Adams - who was Meghan's on-screen husband on the show, as well as Patrick's wife Troian Bellisario

His character Mike Ross wed Meghan's alter-ego Rachel in the drama Suits in its last season. 

The actor, who joked that he thought his co-star was popping out to 'get some milk' when her engagement was first announced, poked fun again on Saturday morning with a new Instagram snap of Meghan on the cover of a newspaper. 

The 36-year-old actor captioned the image: 'I'm beginning to think she might not actually be out getting milk'. 

Squad:The other cast members spotted arriving with their respective partners included Gabriel Macht (R), Sarah Rafferty (C) Gina Torres (L) and Abigail Spencer

Squad:The other cast members spotted arriving with their respective partners included Gabriel Macht (R), Sarah Rafferty (C) Gina Torres (L) and Abigail Spencer

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