If you’re even the least little bit of a control freak, you’re already contemplating what your guy is going to wear. That’s good because leaving it until the last minute is a terrible idea. Here’s why: the two of you will need to decide between a tux, which is typically ordered six months in advance of the wedding date, or a suit and either way, fittings, done three months in advance, are an absolute must.

Whatever he’s going to wear should complement the level of formality and the venue as well as the style of your dress. Sounds complicated, right? It doesn’t have to be. With a few simple guidelines you’re in no danger of having a groom that looks more Drew Carey than Cary Grant.

If Your Wedding Is Formal
It helps to start with some stylish inspiration, if your wedding is a very formal black-tie evening, look to Cary Grant or Frank Sinatra and the rest of the Rat Pack. George Clooney (and the cast of Ocean’s 11) is a contemporary class act. For formal events, you can’t go wrong with a tuxedo or a black suit as long as it’s fitted properly.

A wedding is not really the time to start setting trends, so unless your guy has a very particular sense of style that can be incorporated into his look, your best bet is to ere on the side of tradition. That said, a great way to have some fun and offer him some semblance of self-expression is to have him choose (or gift him) a pair of unique cufflinks.

If Your Wedding Is Informal
Outdoor weddings or informal venues don’t require a tux. In fact, if you are planning to getting married at the beach, a tux would look completely out of place. A lightweight and light-colored suit is perfect for daytime weddings in a garden or on a beach. You could also opt for a pair of dress pants, a dress shirt, and blazer. If your wedding is in a formal garden and the weather isn’t too warm, a suit in a darker color would be appropriate.