Jennifer Lawrence, a woman always living her best life (red carpet, restaurant, location doesn't matter), attended her good friend Laura Simpson's wedding this weekend in Florence, Italy. Her conduct there was well documented—which is lucky, because we could all learn a thing or two from J.Law...in life, but like, as wedding guest, too. Here are some important pointers from Jennifer Lawrence, exemplary wedding guest:

1. Wear a dress you know people/your stylist will like. Give it a test run even! 

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If your outfit was good enough for The Tonight Show, it's good enough for a wedding.

2. Give the bride a hand. But remember you have two...

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...and the other should always be holding a glass of Champagne. Never let go of that if you can help it.

3. Enjoy yourself, too. This is a celebration of life, people!

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Frolic with cute, Ed Sheeran-lookalikes! Laugh! Go braless even. It's a party!

4. Make new friends. But like, keep the old ones close...

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Hey Aziz Ansari in the corner there...

Because sometimes people are the worst. And when all else fails, Champagne!