And some ultimate wedding don’ts:

So, is it ever ok to wear white to a wedding? The bridal expert jury is divided. Traditionalist Leonard says that it’s never ok to wear white “unless it’s described on the invitation as an all-white party.” Berry says that, although more brides are choosing to wear different colored gowns, you still shouldn’t don white “unless you know the bride absolutely does not care.” White summer suits, however, are fine for men. Naylor thinks that wearing white is now considered A-ok, though it is best to dress your outfit up with color to “set yourself apart from the bride.”

And leave the denim at home. “Don’t wear jeans to a wedding unless specifically asked to do so,” explains Naylor. Berry feels pretty passionate about this wedding-don’t: “I mean really, how old are you? You’re not a kid.”

Some of Naylor’s other don’ts?

Super short skirts: “You don’t want to be the wedding guests who gets photographed sitting at the wedding with a clear view up your skirt.”

Sleeveless or strapless dresses to a religious wedding: “Some houses of worship won’t let you in the building if you’re showing skin.”

And perhaps most importantly, never outshine the bride: “If you show up in a dress that costs 10x more than hers, with lots of sparkle, it makes you look like an attention whore. Sorry, but that’s what people will say behind your back, or to your face.”