Mark Wright and Michelle Keegan forcing all wedding guests to bring two outfits

A source said: "The venue Mark and Michelle have chosen is incredibly posh - it's like somewhere Lady Edith would get married. So guests attending the breakfast the following morning will still have to look swish.

"Obviously, the 'TOWIE' girls have endless wardrobes but some of the other guests are stressing about needing two outfits.They know the wedding party will be full of glamorous people in expensive dresses so it has put the pressure on some non-celeb guests.

"It's all going to be part of the magazine coverage so everyone wants to look their best."

Speaking to the Mirror newspaper, the source added that some of the guests are even "planning on getting their hair and make-up done in the morning" too.

Michelle - whose bridesmaids include Mark's sisters Jess and Natalya Wright - went for her final dress fitting this week, and has previously said she is to wear an ivory dress that she's designed herself on her wedding day.