The 5 worst wedding faux pas you can make, according to a wedding planner

Weddings are supposed to be fun - for the hosts, the hosts' family, and the guests.

Unfortunately, the celebrations can easily go awry.

Melissa McNeeley, a New York City-based wedding planner who's worked with Steve Martin and Jim Parsons, told us about the worst wedding faux pas she's encountered - and only some of them involve too much champagne.

Below, find five breaches of etiquette that will quickly land you on the wedding-guest blacklist.