updated 06/22/2014 AT 12:00 PM ET
•originally published 06/22/2014 AT 12:30 PM ET
As she headed to Cabo San Lucas, Mexico, the bride-to-be seemed to follow her own rules.
Earlier this month, the fashion designer took to her lifestyle blog to offer some tips on ladylike etiquette during such a weekend.
Making her list: Watch what type of photos you post on social media.
Based on the snapshots posted by her group – which included her The Hills costar Lo Bosworth and longtime friends Maura McManus, Hannah Skvarla and Jilly Hendrix – they followed her advice … well, for the most part!
Among her other rules: Make sure to keep your wardrobe classy and drink responsibly. No surprise here, Conrad, 28, and her ladies showed off their on-trend style with their colorful framed sunglasses, airy dresses, bright prints and crop tops.