Brad Pitt has turned into a groomzilla.

The hunky actor can't wait to tie the knot with partner Angelina Jolie and has been meticulously planning their big day for late September, even down to the placements and hymns. The couple are set to tie the knot on their sprawling estate Chateau Miraval in France in front of just 20 guests including their six children Maddox, 10, Pax, nine, Zahara, seven, Shiloh, six and four-year-old twins Knox and Vivienne.

"Angelina isn't so bothered about when they tie the knot - it's Brad who is piling on the pressure. He wants the main house to be finished when the event takes place, even though the close friends and relatives who are invited aren't the types to care. He wants everything to be absolutely perfect," a source told The Sun.

Meanwhile it has been claimed the couple had plans to get married from the start of their relationship, according to the man who designed their engagement ring.

"Brad and Angelina are a very romantic couple. They always knew they'd be together forever and get married one day, right from the start," said Robert Procop. Robert also believes their relationship has matured with time. "The relationship may have been all flying planes and riding motorcycles at the start, but any new relationship is exciting that way. Now though, they've settled into this wonderfully strong family unit and it's beautiful how in love they are," he explained. "They're both lovely, very talented people that complement each other... when you're with them, you can see how strongly in love they are," the designer added.