Fool us once, shame on you, but fool us twice? We don't think so. Jennifer Aniston and Justin Theroux will reportedly marry this weekend, if the latest round of rumours are to be believed.

Apparently Jen and her fiance are so determined to keep their nuptials secret, friends and family invited to their Los Angeles home on Saturday have been told it is for Justin's 42nd birthday party, which it very well may be, but the way it's being set up is making us think otherwise. Rumours suggest that the couple - who met on the set of 2011 movie 'Wanderlust' - will then celebrate their marriage with a bigger party later in the year.

According to the Mirror: 'August 10th is Justin's birthday, and their nearest and dearest have been invited to a huge 'birthday party'. But everyone is convinced they're planning to exchange vows within the grounds of their new home and for it to be a huge surprise on the day. They have gone to extreme lengths to keep it quiet - openly lying to their friends to keep up the ruse. Apparently it's going to be a very low-key affair with the possibility of a bigger celebration later on in the year.'

It is believed the Jennifer and Justin told their mothers Nancy and Phyllis about their plans over a family dinner in New York two weeks ago, and both women will be at the wedding despite Jennifer's strained relationship with her mum.

It wouldn't be the first time a celeb pulled one over on the media either, with Halle Berry flying off to France to get hitched without anyone around to witness it last month.