The primary differences between bachelor and bachelorette parties? Bachelor party guests wake up the next morning with face tattoos, missing teeth and a real live tiger in their hotel bathroom. Bachelorette party guests actually remember how they got home, or at least have lots of selfies to help piece the night together.

Take Lauren Conrad's out-of-this-world festivities, for instance. Abiding by her own Ladylike Laws for Bachelorette Party Etiquette, the "Hills" alum grabbed her besties — including longtime pal Lo Bosworth, DJ Jilly Hendrix and The Little Market co-founder Hannah Skvarla — this past weekend for an unforgettable trip to Cabo San Lucas. And judging by the photos that made their way to social media, LC let loose in totally non-embarrassing fashion before her upcoming nuptials to fiancé William Tell.

The girls kicked off the mini-vacay with the most adorbs diamond ring-shaped sugar cookies ever, plus custom wristband tattoos (the NOT permanent kind), and tagged all pics #donttellmrtell. Because, well, cookies are crazy? And it sounded cute.

Let the games begin...#donttellmrtell -@laurenconrad

Almost too cute to eat... Almost. #donttellmrtell -@laurenconrad

New ink #donttellmrtell -@lobosworth

Good morning...#donttellmrtell -@laurenconrad

Lauren's pals also followed proper bachelorette-party protocol by keeping their pics PG, only including lots of laughs, responsible drinking and south-of-the-border scenery that made us just a wee bit envious.

#waves #donttellmrtell -@jillyhendrix

farm julep -@hannahskvarla

#donttellmrtell -@alexvsalvatore

-@jillyhendrix

another perfect day -@hannahskvarla

LC's Mexico hurrah was a bona fide BFF fest, which is what bachelorette parties are all about — making memories and bonding with your girlfriends.

tres amigas #donttellmrtell -@laurenconrad

Missing this beach already! #donttellmrtell -@laurenconrad