If you’re headed to a formal event that calls for a strict dress code, you’ve landed in the right spot. Cocktail attire, semi-formal, white tie—ring any bells? While all the aforementioned dress codes read “fancy,” what’s really the difference between them all? Are there strict rules? If so, what are they? Well, today, we’re here to take a deep dive into one dress code, in particular, and that would be black-tie attire for women.

To get a second opinion on the matter, we reached out to celebrity stylist Sarah Nearis for her expert opinion. Let’s be honest: If there’s anyone who knows a thing or two about formal dressing, it’s her. “Some people dread black-tie events, but they are my favorite because it gives me an excuse to go all out. I love the opportunity to get glammed up, but there are some dos and don’ts when it comes to black-tie events,” says Nearis. We’re curious to discover what they are. Read on as she walks us through her official dos and don’ts on appropriate wedding black-tie attire for women. Take notes, people—we promise this will come in handy one day.