Clean the strawberries, cut into pieces and puree them finely. Place the puree in the freezer for about 3 hours.
Put the frozen strawberry puree together with the tequila, orange liqueur, lemon juice and ice cubes in a blender or mixer and mix everything vigorously.
For the decoration, put the sugar and lemon juice each on a small saucer. Dip the rims of the glasses upside down in the lemon juice and then in the sugar to create a sugar rim.
Pour the strawberry margaritas into the glasses. Possibly stick a flower or a cut strawberry on the edge of the glass and serve.