If you're one of the 1,900 lucky people invited to the wedding of the Royal Wedding here's some tips on what you shouldn't wear.
For the gents Peta Hunt, fashion director of You & Your Wedding magazine, advises:
"It would be very bad form if anyone turned up dressed like a rock 'n' roll star in a white suit, or anything too unusual. Those wearing lounge suits should still stick to gray, black, blue, perhaps dark brown if you're feeling especially fruity. There's room for maneuver with ties — you can go with a very bold color or even a floral pattern. But this is still not the time to bring out your Homer Simpson party number."
The rules for ladies aren't as complicated.
Peta adds: "Never, ever try and upstage the bride. This is not the time to be wearing your 'it should have been me' dress."
[Image via Anwar Hussein/WENN.]