2024 Skinny margarita recipe - Aug 6, 2020 · The Ultimate Sugar-free Skinny Margarita. Yield: 1. Prep Time: 2 minutes. Total Time: 2 minutes. This recipe has a hint of grapefruit for a surprisingly fresh punch of flavor. If you're not a fan of grapefruit, just double up on the lime juice and use regular or lemon-lime flavored seltzer.