There's a good chance you've been invited to a wedding — or will be — where the expected attire was a mystery. Unless the invitation specifically mentions "black tie" or another dress code, you may have to take a guess at what is appropriate. Usually, there are hints that will offer ideas about the formality of the wedding. Act as a super sleuth and follow the clues.

Look at the invitation. Does it have all of the markers of a formal wedding: thick cardstock, engraved type, calligraphy on the envelope? Or does it casually invite you to watch the couple tie the knot? Typically, the invitation will set the tone of the wedding.

Consider the location of the ceremony and reception. Chances are, if the couple is being married on the beach and having a clam bake as their party, they won't expect guests to wear evening gowns and tails. But if you recognize the reception hall to be a formal or semiformal venue, the dress code is likely similar.

Take your cues from the bride and her wedding party. If you've heard the bride will be wearing a cathedral-length veil and elaborate wedding gown, then she's going for a formal wedding. If you know the bridesmaids are wearing sarongs and flip-flops, it's probably a casual affair.

Don't be afraid to ask. Call the bride, groom or their parents and ask what type of atmosphere it will be.

If you're mortified by this idea, err on the side of caution by choosing something conservative. Women usually can't go wrong with a black cocktail dress, and men can play it safe in a dark suit and tie.

— Metro News Service

These guidelines may help:

BLACK TIE

• Her: A formal dress, usually to the floor. Coordinate with a beaded purse and elegant wrap. Expect to dance, so don't wear anything too revealing or constricting.

• Him: A tuxedo is the only appropriate thing to wear.

EVENING WEDDING

• Her: Dress as if you were going to the theater or a fancy restaurant. Cocktail dresses or dressy suits are appropriate. Avoid anything that's too flashy. That includes sequins. Suits shouldn't be too stuffy or corporate.

• Him: A dark suit is always a safe bet. If you suspect it is semiformal, you may be able to wear a blazer, slacks and a tie.

DAYTIME WEDDING

• Her: A conservative but fun floral dress or light-colored suit.

• Him: A light-colored suit if it is a summer wedding. For winter, dress warmer in a blazer and slacks, with a dress shirt or sweater underneath. Tuxedos should not be worn before 6 p.m.

IF IN DOUBT

It's safe to assume the following are not appropriate to wear to a wedding:

• Black to a daytime wedding. You'll look like you are in mourning.

• White. It competes with the bride.

• Jeans.

• Anything torn, dirty or ill-fitting.

• Anything too revealing, particularly to a religious wedding where a cover-up may be necessary for a strapless or sleeveless gown.