Michelle Keegan is asking a lot of her wedding guests…

Michelle Keegan and Mark Wright's wedding has to be one of the most anticipated celebrity events of 2015, and we've just found out some more details.

Last week Mark's former TOWIE co-star Lydia Bright took to Instagram to share (and later delete) a peek at the pristine invitation she received – but it's what was written inside that really had us raising our eyebrows.

A source revealed to The Mirror that all guests have been asked to bring not one but two formal outfits for the lavish wedding, rumoured to be taking place in eight days time at the luxury Hengrave Hall in Suffolk.

Attendees are not only required to dress up for the wedding itself, but also for a photoshoot at the post-wedding breakfast the following morning.

"The venue Mark and Michelle have chosen is incredibly posh," the source said. "So guests attending the breakfast the following morning will still have to look swish."

Yup, that means two dresses, two pairs of heels, and a LOT of make-up to hide that hangover in time for breakfast. "Some are even planning to get hair and make-up done in the morning, too," the source revealed.

Unsurprisingly, the need for two perfect outfits is putting pressure on some guests who might not have a celebrity budget. "The wedding party will be full of glamorous people in expensive dresses so it has put the pressure on some non-celeb guests," the source said.

She might still be shopping around for something to wear the next day, but Michelle already has her wedding day outfit in the bag; a custom-made gown from exclusive London boutique Browns Bride. 

"There isn’t much I can tell you about my wedding dress but I will say it’s ivory," the actress recently told Closer magazine. "I designed it myself, so I’m really excited about it."

We cannot wait to see the pictures!