Deciding what to wear to an engagement party should be the first order of business after the invitation—or, more likely, the Partiful link—arrives.

Don’t wear a white dress, obviously, but a floral print with a white base is likely fine in a guest outfit as long as color takes up roughly 50% or more of the fabric’s surface area.

Deciding what to wear to an engagement party should be the first order of business after the invitation—or, more likely, the Partiful link—arrives. It’s not hard to find a thoughtful card or ...