There's nothing like being nervous to make you feel all peculiar. Big dates, exams, driving tests, appearing in plays - all life events that come under the Brown Trouser Day umbrella.
It's a shame that the traditional wedding party dress code involves monochrome, because arguably, getting hitched is the biggest nerve-wracker of all.
You might think super smooth star Justin Timblerlake would be above wedding jitters - but despite being in movies and singing to crowds of thousands, the prospect of partnering up with Jessica Biel reportedly made him come over all poorly.
According to an insider who spoke to Us magazine, "Justin wasn't feeling well all week and on his wedding day... they had a big night at the bar where everyone went crazy - but Justin wasn't feeling great."
The ceremony, that took place at the Borgo Egnazia hotel in Italy, was a friends and family only affair.
Mates that turned up to celebrate with Justin included Cuckoo star Andy Samberg and his almost name twin, producer Timbaland.
Justin planned to bust out some N*Sync moves for Jessica at the wedding. Check out his preparations here: