Optional: Rim your glass with salt or sugar by rubbing the rim with a lemon wedge and dipping into a plate of salt or sugar.
In a cocktail shaker, combine tequila, lemon juice, lavender simple syrup, and triple sec with a handful of ice.
Shake vigorously for 15–20 seconds until well-chilled.
Strain into a glass filled with fresh ice.
Garnish with a sprig of lavender and a lemon wheel.
Serve immediately and enjoy!