Olivia and her fiance Alex Bowen got engaged last Christmas while Mario proposed to his partner Becky Meisner in June, and the pair have been bonding on Twitter over their least favourite part of wedding planning - the guest list.
Liv tweeted: "Why is guest list planning for weddings so hard. I now cannot think of any person I know", and Mario responded "We have find it the hardest part so far.... proper headache", Liv then replied with "it's literally impossible! Why does your mind just go completely blank?"
Do you feel their pain when it comes to guest lists, or has it been a breeze? Read our solutions to the top wedding guest list problems to make it a whole lot easier.