Formal dress for ladies can vary depending on the occasion, but there are some general guidelines to follow. Here are some tips based on the search results:

• Length: Typically, formal dresses are floor-length, though midi or knee-length options can work for certain occasions. For a formal wedding, dresses that hit above the ankle are acceptable, as well as fitted, darker-hued suits paired with a crisp white button-down and tie.

• Tailoring: The formality of a dress tends to depend on length and tailoring. Choose a dress that is well-tailored and fits you properly.

• Neckline: Feel free to choose the neckline of your choice, but depending on the occasion, you may want to avoid ultra-plunging options.

• Color: Formal doesn’t mean you have to wear a black cocktail dress. You can add a cheerful pop of color with hues of red, green, and pink.

• Accessories: For a formal event, you can accessorize with evening gloves, statement jewelry, and a clutch.

Its important to note that different types of formal events may have different dress codes, so its always a good idea to do some research and check out the venue for more cues as to how to approach your outfit.